mirror of
https://github.com/git/git.git
synced 2024-12-05 16:04:29 +08:00
6c227410b5
By Jeff King * jk/pretty-commit-header-incomplete-line: avoid segfault when reading header of malformed commits
1444 lines
34 KiB
C
1444 lines
34 KiB
C
#include "cache.h"
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#include "commit.h"
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#include "utf8.h"
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#include "diff.h"
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#include "revision.h"
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#include "string-list.h"
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#include "mailmap.h"
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#include "log-tree.h"
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#include "notes.h"
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#include "color.h"
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#include "reflog-walk.h"
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#include "gpg-interface.h"
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static char *user_format;
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static struct cmt_fmt_map {
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const char *name;
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enum cmit_fmt format;
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int is_tformat;
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int is_alias;
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const char *user_format;
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} *commit_formats;
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static size_t builtin_formats_len;
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static size_t commit_formats_len;
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static size_t commit_formats_alloc;
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static struct cmt_fmt_map *find_commit_format(const char *sought);
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static void save_user_format(struct rev_info *rev, const char *cp, int is_tformat)
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{
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free(user_format);
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user_format = xstrdup(cp);
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if (is_tformat)
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rev->use_terminator = 1;
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rev->commit_format = CMIT_FMT_USERFORMAT;
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}
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static int git_pretty_formats_config(const char *var, const char *value, void *cb)
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{
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struct cmt_fmt_map *commit_format = NULL;
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const char *name;
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const char *fmt;
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int i;
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if (prefixcmp(var, "pretty."))
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return 0;
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name = var + strlen("pretty.");
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for (i = 0; i < builtin_formats_len; i++) {
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if (!strcmp(commit_formats[i].name, name))
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return 0;
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}
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for (i = builtin_formats_len; i < commit_formats_len; i++) {
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if (!strcmp(commit_formats[i].name, name)) {
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commit_format = &commit_formats[i];
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break;
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}
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}
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if (!commit_format) {
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ALLOC_GROW(commit_formats, commit_formats_len+1,
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commit_formats_alloc);
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commit_format = &commit_formats[commit_formats_len];
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memset(commit_format, 0, sizeof(*commit_format));
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commit_formats_len++;
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}
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commit_format->name = xstrdup(name);
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commit_format->format = CMIT_FMT_USERFORMAT;
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git_config_string(&fmt, var, value);
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if (!prefixcmp(fmt, "format:") || !prefixcmp(fmt, "tformat:")) {
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commit_format->is_tformat = fmt[0] == 't';
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fmt = strchr(fmt, ':') + 1;
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} else if (strchr(fmt, '%'))
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commit_format->is_tformat = 1;
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else
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commit_format->is_alias = 1;
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commit_format->user_format = fmt;
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return 0;
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}
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static void setup_commit_formats(void)
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{
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struct cmt_fmt_map builtin_formats[] = {
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{ "raw", CMIT_FMT_RAW, 0 },
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{ "medium", CMIT_FMT_MEDIUM, 0 },
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{ "short", CMIT_FMT_SHORT, 0 },
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{ "email", CMIT_FMT_EMAIL, 0 },
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{ "fuller", CMIT_FMT_FULLER, 0 },
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{ "full", CMIT_FMT_FULL, 0 },
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{ "oneline", CMIT_FMT_ONELINE, 1 }
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};
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commit_formats_len = ARRAY_SIZE(builtin_formats);
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builtin_formats_len = commit_formats_len;
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ALLOC_GROW(commit_formats, commit_formats_len, commit_formats_alloc);
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memcpy(commit_formats, builtin_formats,
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sizeof(*builtin_formats)*ARRAY_SIZE(builtin_formats));
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git_config(git_pretty_formats_config, NULL);
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}
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static struct cmt_fmt_map *find_commit_format_recursive(const char *sought,
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const char *original,
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int num_redirections)
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{
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struct cmt_fmt_map *found = NULL;
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size_t found_match_len = 0;
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int i;
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if (num_redirections >= commit_formats_len)
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die("invalid --pretty format: "
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"'%s' references an alias which points to itself",
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original);
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for (i = 0; i < commit_formats_len; i++) {
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size_t match_len;
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if (prefixcmp(commit_formats[i].name, sought))
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continue;
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match_len = strlen(commit_formats[i].name);
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if (found == NULL || found_match_len > match_len) {
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found = &commit_formats[i];
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found_match_len = match_len;
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}
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}
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if (found && found->is_alias) {
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found = find_commit_format_recursive(found->user_format,
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original,
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num_redirections+1);
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}
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return found;
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}
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static struct cmt_fmt_map *find_commit_format(const char *sought)
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{
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if (!commit_formats)
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setup_commit_formats();
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return find_commit_format_recursive(sought, sought, 0);
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}
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void get_commit_format(const char *arg, struct rev_info *rev)
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{
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struct cmt_fmt_map *commit_format;
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rev->use_terminator = 0;
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if (!arg || !*arg) {
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rev->commit_format = CMIT_FMT_DEFAULT;
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return;
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}
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if (!prefixcmp(arg, "format:") || !prefixcmp(arg, "tformat:")) {
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save_user_format(rev, strchr(arg, ':') + 1, arg[0] == 't');
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return;
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}
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if (strchr(arg, '%')) {
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save_user_format(rev, arg, 1);
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return;
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}
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commit_format = find_commit_format(arg);
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if (!commit_format)
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die("invalid --pretty format: %s", arg);
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rev->commit_format = commit_format->format;
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rev->use_terminator = commit_format->is_tformat;
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if (commit_format->format == CMIT_FMT_USERFORMAT) {
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save_user_format(rev, commit_format->user_format,
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commit_format->is_tformat);
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}
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}
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/*
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* Generic support for pretty-printing the header
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*/
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static int get_one_line(const char *msg)
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{
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int ret = 0;
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for (;;) {
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char c = *msg++;
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if (!c)
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break;
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ret++;
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if (c == '\n')
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break;
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}
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return ret;
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}
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/* High bit set, or ISO-2022-INT */
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static int non_ascii(int ch)
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{
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return !isascii(ch) || ch == '\033';
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}
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int has_non_ascii(const char *s)
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{
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int ch;
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if (!s)
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return 0;
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while ((ch = *s++) != '\0') {
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if (non_ascii(ch))
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return 1;
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}
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return 0;
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}
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static int is_rfc822_special(char ch)
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{
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switch (ch) {
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case '(':
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case ')':
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case '<':
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case '>':
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case '[':
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case ']':
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case ':':
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case ';':
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case '@':
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case ',':
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case '.':
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case '"':
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case '\\':
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return 1;
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default:
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return 0;
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}
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}
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static int has_rfc822_specials(const char *s, int len)
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{
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int i;
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for (i = 0; i < len; i++)
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if (is_rfc822_special(s[i]))
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return 1;
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return 0;
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}
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static void add_rfc822_quoted(struct strbuf *out, const char *s, int len)
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{
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int i;
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/* just a guess, we may have to also backslash-quote */
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strbuf_grow(out, len + 2);
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strbuf_addch(out, '"');
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for (i = 0; i < len; i++) {
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switch (s[i]) {
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case '"':
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case '\\':
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strbuf_addch(out, '\\');
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/* fall through */
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default:
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strbuf_addch(out, s[i]);
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}
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}
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strbuf_addch(out, '"');
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}
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static int is_rfc2047_special(char ch)
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{
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return (non_ascii(ch) || (ch == '=') || (ch == '?') || (ch == '_'));
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}
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static void add_rfc2047(struct strbuf *sb, const char *line, int len,
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const char *encoding)
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{
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static const int max_length = 78; /* per rfc2822 */
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int i;
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int line_len;
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/* How many bytes are already used on the current line? */
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for (i = sb->len - 1; i >= 0; i--)
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if (sb->buf[i] == '\n')
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break;
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line_len = sb->len - (i+1);
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for (i = 0; i < len; i++) {
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int ch = line[i];
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if (non_ascii(ch) || ch == '\n')
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goto needquote;
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if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
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goto needquote;
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}
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strbuf_add_wrapped_bytes(sb, line, len, 0, 1, max_length - line_len);
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return;
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needquote:
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strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
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strbuf_addf(sb, "=?%s?q?", encoding);
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line_len += strlen(encoding) + 5; /* 5 for =??q? */
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for (i = 0; i < len; i++) {
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unsigned ch = line[i] & 0xFF;
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if (line_len >= max_length - 2) {
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strbuf_addf(sb, "?=\n =?%s?q?", encoding);
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line_len = strlen(encoding) + 5 + 1; /* =??q? plus SP */
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}
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/*
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* We encode ' ' using '=20' even though rfc2047
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* allows using '_' for readability. Unfortunately,
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* many programs do not understand this and just
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* leave the underscore in place.
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*/
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if (is_rfc2047_special(ch) || ch == ' ' || ch == '\n') {
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strbuf_addf(sb, "=%02X", ch);
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line_len += 3;
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}
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else {
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strbuf_addch(sb, ch);
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line_len++;
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}
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}
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strbuf_addstr(sb, "?=");
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}
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void pp_user_info(const struct pretty_print_context *pp,
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const char *what, struct strbuf *sb,
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const char *line, const char *encoding)
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{
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char *date;
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int namelen;
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unsigned long time;
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int tz;
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if (pp->fmt == CMIT_FMT_ONELINE)
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return;
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date = strchr(line, '>');
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if (!date)
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return;
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namelen = ++date - line;
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time = strtoul(date, &date, 10);
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tz = strtol(date, NULL, 10);
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if (pp->fmt == CMIT_FMT_EMAIL) {
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char *name_tail = strchr(line, '<');
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int display_name_length;
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int final_line;
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if (!name_tail)
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return;
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while (line < name_tail && isspace(name_tail[-1]))
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name_tail--;
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display_name_length = name_tail - line;
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strbuf_addstr(sb, "From: ");
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if (!has_rfc822_specials(line, display_name_length)) {
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add_rfc2047(sb, line, display_name_length, encoding);
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} else {
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struct strbuf quoted = STRBUF_INIT;
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add_rfc822_quoted("ed, line, display_name_length);
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add_rfc2047(sb, quoted.buf, quoted.len, encoding);
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strbuf_release("ed);
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}
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for (final_line = 0; final_line < sb->len; final_line++)
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if (sb->buf[sb->len - final_line - 1] == '\n')
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break;
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if (namelen - display_name_length + final_line > 78) {
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strbuf_addch(sb, '\n');
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if (!isspace(name_tail[0]))
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strbuf_addch(sb, ' ');
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}
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strbuf_add(sb, name_tail, namelen - display_name_length);
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strbuf_addch(sb, '\n');
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} else {
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strbuf_addf(sb, "%s: %.*s%.*s\n", what,
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(pp->fmt == CMIT_FMT_FULLER) ? 4 : 0,
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" ", namelen, line);
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}
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switch (pp->fmt) {
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case CMIT_FMT_MEDIUM:
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strbuf_addf(sb, "Date: %s\n", show_date(time, tz, pp->date_mode));
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break;
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case CMIT_FMT_EMAIL:
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strbuf_addf(sb, "Date: %s\n", show_date(time, tz, DATE_RFC2822));
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break;
|
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case CMIT_FMT_FULLER:
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strbuf_addf(sb, "%sDate: %s\n", what, show_date(time, tz, pp->date_mode));
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break;
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|
default:
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/* notin' */
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break;
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}
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}
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static int is_empty_line(const char *line, int *len_p)
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{
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int len = *len_p;
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while (len && isspace(line[len-1]))
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len--;
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*len_p = len;
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return !len;
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}
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static const char *skip_empty_lines(const char *msg)
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{
|
|
for (;;) {
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int linelen = get_one_line(msg);
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int ll = linelen;
|
|
if (!linelen)
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break;
|
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if (!is_empty_line(msg, &ll))
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break;
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msg += linelen;
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}
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return msg;
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}
|
|
|
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static void add_merge_info(const struct pretty_print_context *pp,
|
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struct strbuf *sb, const struct commit *commit)
|
|
{
|
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struct commit_list *parent = commit->parents;
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|
|
|
if ((pp->fmt == CMIT_FMT_ONELINE) || (pp->fmt == CMIT_FMT_EMAIL) ||
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!parent || !parent->next)
|
|
return;
|
|
|
|
strbuf_addstr(sb, "Merge:");
|
|
|
|
while (parent) {
|
|
struct commit *p = parent->item;
|
|
const char *hex = NULL;
|
|
if (pp->abbrev)
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hex = find_unique_abbrev(p->object.sha1, pp->abbrev);
|
|
if (!hex)
|
|
hex = sha1_to_hex(p->object.sha1);
|
|
parent = parent->next;
|
|
|
|
strbuf_addf(sb, " %s", hex);
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|
}
|
|
strbuf_addch(sb, '\n');
|
|
}
|
|
|
|
static char *get_header(const struct commit *commit, const char *key)
|
|
{
|
|
int key_len = strlen(key);
|
|
const char *line = commit->buffer;
|
|
|
|
while (line) {
|
|
const char *eol = strchr(line, '\n'), *next;
|
|
|
|
if (line == eol)
|
|
return NULL;
|
|
if (!eol) {
|
|
warning("malformed commit (header is missing newline): %s",
|
|
sha1_to_hex(commit->object.sha1));
|
|
eol = line + strlen(line);
|
|
next = NULL;
|
|
} else
|
|
next = eol + 1;
|
|
if (eol - line > key_len &&
|
|
!strncmp(line, key, key_len) &&
|
|
line[key_len] == ' ') {
|
|
return xmemdupz(line + key_len + 1, eol - line - key_len - 1);
|
|
}
|
|
line = next;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static char *replace_encoding_header(char *buf, const char *encoding)
|
|
{
|
|
struct strbuf tmp = STRBUF_INIT;
|
|
size_t start, len;
|
|
char *cp = buf;
|
|
|
|
/* guess if there is an encoding header before a \n\n */
|
|
while (strncmp(cp, "encoding ", strlen("encoding "))) {
|
|
cp = strchr(cp, '\n');
|
|
if (!cp || *++cp == '\n')
|
|
return buf;
|
|
}
|
|
start = cp - buf;
|
|
cp = strchr(cp, '\n');
|
|
if (!cp)
|
|
return buf; /* should not happen but be defensive */
|
|
len = cp + 1 - (buf + start);
|
|
|
|
strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
|
|
if (is_encoding_utf8(encoding)) {
|
|
/* we have re-coded to UTF-8; drop the header */
|
|
strbuf_remove(&tmp, start, len);
|
|
} else {
|
|
/* just replaces XXXX in 'encoding XXXX\n' */
|
|
strbuf_splice(&tmp, start + strlen("encoding "),
|
|
len - strlen("encoding \n"),
|
|
encoding, strlen(encoding));
|
|
}
|
|
return strbuf_detach(&tmp, NULL);
|
|
}
|
|
|
|
char *logmsg_reencode(const struct commit *commit,
|
|
const char *output_encoding)
|
|
{
|
|
static const char *utf8 = "UTF-8";
|
|
const char *use_encoding;
|
|
char *encoding;
|
|
char *out;
|
|
|
|
if (!*output_encoding)
|
|
return NULL;
|
|
encoding = get_header(commit, "encoding");
|
|
use_encoding = encoding ? encoding : utf8;
|
|
if (!strcmp(use_encoding, output_encoding))
|
|
if (encoding) /* we'll strip encoding header later */
|
|
out = xstrdup(commit->buffer);
|
|
else
|
|
return NULL; /* nothing to do */
|
|
else
|
|
out = reencode_string(commit->buffer,
|
|
output_encoding, use_encoding);
|
|
if (out)
|
|
out = replace_encoding_header(out, output_encoding);
|
|
|
|
free(encoding);
|
|
return out;
|
|
}
|
|
|
|
static int mailmap_name(char *email, int email_len, char *name, int name_len)
|
|
{
|
|
static struct string_list *mail_map;
|
|
if (!mail_map) {
|
|
mail_map = xcalloc(1, sizeof(*mail_map));
|
|
read_mailmap(mail_map, NULL);
|
|
}
|
|
return mail_map->nr && map_user(mail_map, email, email_len, name, name_len);
|
|
}
|
|
|
|
static size_t format_person_part(struct strbuf *sb, char part,
|
|
const char *msg, int len, enum date_mode dmode)
|
|
{
|
|
/* currently all placeholders have same length */
|
|
const int placeholder_len = 2;
|
|
int tz;
|
|
unsigned long date = 0;
|
|
char person_name[1024];
|
|
char person_mail[1024];
|
|
struct ident_split s;
|
|
const char *name_start, *name_end, *mail_start, *mail_end;
|
|
|
|
if (split_ident_line(&s, msg, len) < 0)
|
|
goto skip;
|
|
|
|
name_start = s.name_begin;
|
|
name_end = s.name_end;
|
|
mail_start = s.mail_begin;
|
|
mail_end = s.mail_end;
|
|
|
|
if (part == 'N' || part == 'E') { /* mailmap lookup */
|
|
snprintf(person_name, sizeof(person_name), "%.*s",
|
|
(int)(name_end - name_start), name_start);
|
|
snprintf(person_mail, sizeof(person_mail), "%.*s",
|
|
(int)(mail_end - mail_start), mail_start);
|
|
mailmap_name(person_mail, sizeof(person_mail), person_name, sizeof(person_name));
|
|
name_start = person_name;
|
|
name_end = name_start + strlen(person_name);
|
|
mail_start = person_mail;
|
|
mail_end = mail_start + strlen(person_mail);
|
|
}
|
|
if (part == 'n' || part == 'N') { /* name */
|
|
strbuf_add(sb, name_start, name_end-name_start);
|
|
return placeholder_len;
|
|
}
|
|
if (part == 'e' || part == 'E') { /* email */
|
|
strbuf_add(sb, mail_start, mail_end-mail_start);
|
|
return placeholder_len;
|
|
}
|
|
|
|
if (!s.date_begin)
|
|
goto skip;
|
|
|
|
date = strtoul(s.date_begin, NULL, 10);
|
|
|
|
if (part == 't') { /* date, UNIX timestamp */
|
|
strbuf_add(sb, s.date_begin, s.date_end - s.date_begin);
|
|
return placeholder_len;
|
|
}
|
|
|
|
/* parse tz */
|
|
tz = strtoul(s.tz_begin + 1, NULL, 10);
|
|
if (*s.tz_begin == '-')
|
|
tz = -tz;
|
|
|
|
switch (part) {
|
|
case 'd': /* date */
|
|
strbuf_addstr(sb, show_date(date, tz, dmode));
|
|
return placeholder_len;
|
|
case 'D': /* date, RFC2822 style */
|
|
strbuf_addstr(sb, show_date(date, tz, DATE_RFC2822));
|
|
return placeholder_len;
|
|
case 'r': /* date, relative */
|
|
strbuf_addstr(sb, show_date(date, tz, DATE_RELATIVE));
|
|
return placeholder_len;
|
|
case 'i': /* date, ISO 8601 */
|
|
strbuf_addstr(sb, show_date(date, tz, DATE_ISO8601));
|
|
return placeholder_len;
|
|
}
|
|
|
|
skip:
|
|
/*
|
|
* reading from either a bogus commit, or a reflog entry with
|
|
* %gn, %ge, etc.; 'sb' cannot be updated, but we still need
|
|
* to compute a valid return value.
|
|
*/
|
|
if (part == 'n' || part == 'e' || part == 't' || part == 'd'
|
|
|| part == 'D' || part == 'r' || part == 'i')
|
|
return placeholder_len;
|
|
|
|
return 0; /* unknown placeholder */
|
|
}
|
|
|
|
struct chunk {
|
|
size_t off;
|
|
size_t len;
|
|
};
|
|
|
|
struct format_commit_context {
|
|
const struct commit *commit;
|
|
const struct pretty_print_context *pretty_ctx;
|
|
unsigned commit_header_parsed:1;
|
|
unsigned commit_message_parsed:1;
|
|
unsigned commit_signature_parsed:1;
|
|
struct {
|
|
char *gpg_output;
|
|
char good_bad;
|
|
char *signer;
|
|
} signature;
|
|
char *message;
|
|
size_t width, indent1, indent2;
|
|
|
|
/* These offsets are relative to the start of the commit message. */
|
|
struct chunk author;
|
|
struct chunk committer;
|
|
struct chunk encoding;
|
|
size_t message_off;
|
|
size_t subject_off;
|
|
size_t body_off;
|
|
|
|
/* The following ones are relative to the result struct strbuf. */
|
|
struct chunk abbrev_commit_hash;
|
|
struct chunk abbrev_tree_hash;
|
|
struct chunk abbrev_parent_hashes;
|
|
size_t wrap_start;
|
|
};
|
|
|
|
static int add_again(struct strbuf *sb, struct chunk *chunk)
|
|
{
|
|
if (chunk->len) {
|
|
strbuf_adddup(sb, chunk->off, chunk->len);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* We haven't seen this chunk before. Our caller is surely
|
|
* going to add it the hard way now. Remember the most likely
|
|
* start of the to-be-added chunk: the current end of the
|
|
* struct strbuf.
|
|
*/
|
|
chunk->off = sb->len;
|
|
return 0;
|
|
}
|
|
|
|
static void parse_commit_header(struct format_commit_context *context)
|
|
{
|
|
const char *msg = context->message;
|
|
int i;
|
|
|
|
for (i = 0; msg[i]; i++) {
|
|
int eol;
|
|
for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
|
|
; /* do nothing */
|
|
|
|
if (i == eol) {
|
|
break;
|
|
} else if (!prefixcmp(msg + i, "author ")) {
|
|
context->author.off = i + 7;
|
|
context->author.len = eol - i - 7;
|
|
} else if (!prefixcmp(msg + i, "committer ")) {
|
|
context->committer.off = i + 10;
|
|
context->committer.len = eol - i - 10;
|
|
} else if (!prefixcmp(msg + i, "encoding ")) {
|
|
context->encoding.off = i + 9;
|
|
context->encoding.len = eol - i - 9;
|
|
}
|
|
i = eol;
|
|
}
|
|
context->message_off = i;
|
|
context->commit_header_parsed = 1;
|
|
}
|
|
|
|
static int istitlechar(char c)
|
|
{
|
|
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
|
|
(c >= '0' && c <= '9') || c == '.' || c == '_';
|
|
}
|
|
|
|
static void format_sanitized_subject(struct strbuf *sb, const char *msg)
|
|
{
|
|
size_t trimlen;
|
|
size_t start_len = sb->len;
|
|
int space = 2;
|
|
|
|
for (; *msg && *msg != '\n'; msg++) {
|
|
if (istitlechar(*msg)) {
|
|
if (space == 1)
|
|
strbuf_addch(sb, '-');
|
|
space = 0;
|
|
strbuf_addch(sb, *msg);
|
|
if (*msg == '.')
|
|
while (*(msg+1) == '.')
|
|
msg++;
|
|
} else
|
|
space |= 1;
|
|
}
|
|
|
|
/* trim any trailing '.' or '-' characters */
|
|
trimlen = 0;
|
|
while (sb->len - trimlen > start_len &&
|
|
(sb->buf[sb->len - 1 - trimlen] == '.'
|
|
|| sb->buf[sb->len - 1 - trimlen] == '-'))
|
|
trimlen++;
|
|
strbuf_remove(sb, sb->len - trimlen, trimlen);
|
|
}
|
|
|
|
const char *format_subject(struct strbuf *sb, const char *msg,
|
|
const char *line_separator)
|
|
{
|
|
int first = 1;
|
|
|
|
for (;;) {
|
|
const char *line = msg;
|
|
int linelen = get_one_line(line);
|
|
|
|
msg += linelen;
|
|
if (!linelen || is_empty_line(line, &linelen))
|
|
break;
|
|
|
|
if (!sb)
|
|
continue;
|
|
strbuf_grow(sb, linelen + 2);
|
|
if (!first)
|
|
strbuf_addstr(sb, line_separator);
|
|
strbuf_add(sb, line, linelen);
|
|
first = 0;
|
|
}
|
|
return msg;
|
|
}
|
|
|
|
static void parse_commit_message(struct format_commit_context *c)
|
|
{
|
|
const char *msg = c->message + c->message_off;
|
|
const char *start = c->message;
|
|
|
|
msg = skip_empty_lines(msg);
|
|
c->subject_off = msg - start;
|
|
|
|
msg = format_subject(NULL, msg, NULL);
|
|
msg = skip_empty_lines(msg);
|
|
c->body_off = msg - start;
|
|
|
|
c->commit_message_parsed = 1;
|
|
}
|
|
|
|
static void format_decoration(struct strbuf *sb, const struct commit *commit)
|
|
{
|
|
struct name_decoration *d;
|
|
const char *prefix = " (";
|
|
|
|
load_ref_decorations(DECORATE_SHORT_REFS);
|
|
d = lookup_decoration(&name_decoration, &commit->object);
|
|
while (d) {
|
|
strbuf_addstr(sb, prefix);
|
|
prefix = ", ";
|
|
strbuf_addstr(sb, d->name);
|
|
d = d->next;
|
|
}
|
|
if (prefix[0] == ',')
|
|
strbuf_addch(sb, ')');
|
|
}
|
|
|
|
static void strbuf_wrap(struct strbuf *sb, size_t pos,
|
|
size_t width, size_t indent1, size_t indent2)
|
|
{
|
|
struct strbuf tmp = STRBUF_INIT;
|
|
|
|
if (pos)
|
|
strbuf_add(&tmp, sb->buf, pos);
|
|
strbuf_add_wrapped_text(&tmp, sb->buf + pos,
|
|
(int) indent1, (int) indent2, (int) width);
|
|
strbuf_swap(&tmp, sb);
|
|
strbuf_release(&tmp);
|
|
}
|
|
|
|
static void rewrap_message_tail(struct strbuf *sb,
|
|
struct format_commit_context *c,
|
|
size_t new_width, size_t new_indent1,
|
|
size_t new_indent2)
|
|
{
|
|
if (c->width == new_width && c->indent1 == new_indent1 &&
|
|
c->indent2 == new_indent2)
|
|
return;
|
|
if (c->wrap_start < sb->len)
|
|
strbuf_wrap(sb, c->wrap_start, c->width, c->indent1, c->indent2);
|
|
c->wrap_start = sb->len;
|
|
c->width = new_width;
|
|
c->indent1 = new_indent1;
|
|
c->indent2 = new_indent2;
|
|
}
|
|
|
|
static struct {
|
|
char result;
|
|
const char *check;
|
|
} signature_check[] = {
|
|
{ 'G', ": Good signature from " },
|
|
{ 'B', ": BAD signature from " },
|
|
};
|
|
|
|
static void parse_signature_lines(struct format_commit_context *ctx)
|
|
{
|
|
const char *buf = ctx->signature.gpg_output;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(signature_check); i++) {
|
|
const char *found = strstr(buf, signature_check[i].check);
|
|
const char *next;
|
|
if (!found)
|
|
continue;
|
|
ctx->signature.good_bad = signature_check[i].result;
|
|
found += strlen(signature_check[i].check);
|
|
next = strchrnul(found, '\n');
|
|
ctx->signature.signer = xmemdupz(found, next - found);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void parse_commit_signature(struct format_commit_context *ctx)
|
|
{
|
|
struct strbuf payload = STRBUF_INIT;
|
|
struct strbuf signature = STRBUF_INIT;
|
|
struct strbuf gpg_output = STRBUF_INIT;
|
|
int status;
|
|
|
|
ctx->commit_signature_parsed = 1;
|
|
|
|
if (parse_signed_commit(ctx->commit->object.sha1,
|
|
&payload, &signature) <= 0)
|
|
goto out;
|
|
status = verify_signed_buffer(payload.buf, payload.len,
|
|
signature.buf, signature.len,
|
|
&gpg_output);
|
|
if (status && !gpg_output.len)
|
|
goto out;
|
|
ctx->signature.gpg_output = strbuf_detach(&gpg_output, NULL);
|
|
parse_signature_lines(ctx);
|
|
|
|
out:
|
|
strbuf_release(&gpg_output);
|
|
strbuf_release(&payload);
|
|
strbuf_release(&signature);
|
|
}
|
|
|
|
|
|
static int format_reflog_person(struct strbuf *sb,
|
|
char part,
|
|
struct reflog_walk_info *log,
|
|
enum date_mode dmode)
|
|
{
|
|
const char *ident;
|
|
|
|
if (!log)
|
|
return 2;
|
|
|
|
ident = get_reflog_ident(log);
|
|
if (!ident)
|
|
return 2;
|
|
|
|
return format_person_part(sb, part, ident, strlen(ident), dmode);
|
|
}
|
|
|
|
static size_t format_commit_one(struct strbuf *sb, const char *placeholder,
|
|
void *context)
|
|
{
|
|
struct format_commit_context *c = context;
|
|
const struct commit *commit = c->commit;
|
|
const char *msg = c->message;
|
|
struct commit_list *p;
|
|
int h1, h2;
|
|
|
|
/* these are independent of the commit */
|
|
switch (placeholder[0]) {
|
|
case 'C':
|
|
if (placeholder[1] == '(') {
|
|
const char *end = strchr(placeholder + 2, ')');
|
|
char color[COLOR_MAXLEN];
|
|
if (!end)
|
|
return 0;
|
|
color_parse_mem(placeholder + 2,
|
|
end - (placeholder + 2),
|
|
"--pretty format", color);
|
|
strbuf_addstr(sb, color);
|
|
return end - placeholder + 1;
|
|
}
|
|
if (!prefixcmp(placeholder + 1, "red")) {
|
|
strbuf_addstr(sb, GIT_COLOR_RED);
|
|
return 4;
|
|
} else if (!prefixcmp(placeholder + 1, "green")) {
|
|
strbuf_addstr(sb, GIT_COLOR_GREEN);
|
|
return 6;
|
|
} else if (!prefixcmp(placeholder + 1, "blue")) {
|
|
strbuf_addstr(sb, GIT_COLOR_BLUE);
|
|
return 5;
|
|
} else if (!prefixcmp(placeholder + 1, "reset")) {
|
|
strbuf_addstr(sb, GIT_COLOR_RESET);
|
|
return 6;
|
|
} else
|
|
return 0;
|
|
case 'n': /* newline */
|
|
strbuf_addch(sb, '\n');
|
|
return 1;
|
|
case 'x':
|
|
/* %x00 == NUL, %x0a == LF, etc. */
|
|
if (0 <= (h1 = hexval_table[0xff & placeholder[1]]) &&
|
|
h1 <= 16 &&
|
|
0 <= (h2 = hexval_table[0xff & placeholder[2]]) &&
|
|
h2 <= 16) {
|
|
strbuf_addch(sb, (h1<<4)|h2);
|
|
return 3;
|
|
} else
|
|
return 0;
|
|
case 'w':
|
|
if (placeholder[1] == '(') {
|
|
unsigned long width = 0, indent1 = 0, indent2 = 0;
|
|
char *next;
|
|
const char *start = placeholder + 2;
|
|
const char *end = strchr(start, ')');
|
|
if (!end)
|
|
return 0;
|
|
if (end > start) {
|
|
width = strtoul(start, &next, 10);
|
|
if (*next == ',') {
|
|
indent1 = strtoul(next + 1, &next, 10);
|
|
if (*next == ',') {
|
|
indent2 = strtoul(next + 1,
|
|
&next, 10);
|
|
}
|
|
}
|
|
if (*next != ')')
|
|
return 0;
|
|
}
|
|
rewrap_message_tail(sb, c, width, indent1, indent2);
|
|
return end - placeholder + 1;
|
|
} else
|
|
return 0;
|
|
}
|
|
|
|
/* these depend on the commit */
|
|
if (!commit->object.parsed)
|
|
parse_object(commit->object.sha1);
|
|
|
|
switch (placeholder[0]) {
|
|
case 'H': /* commit hash */
|
|
strbuf_addstr(sb, sha1_to_hex(commit->object.sha1));
|
|
return 1;
|
|
case 'h': /* abbreviated commit hash */
|
|
if (add_again(sb, &c->abbrev_commit_hash))
|
|
return 1;
|
|
strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1,
|
|
c->pretty_ctx->abbrev));
|
|
c->abbrev_commit_hash.len = sb->len - c->abbrev_commit_hash.off;
|
|
return 1;
|
|
case 'T': /* tree hash */
|
|
strbuf_addstr(sb, sha1_to_hex(commit->tree->object.sha1));
|
|
return 1;
|
|
case 't': /* abbreviated tree hash */
|
|
if (add_again(sb, &c->abbrev_tree_hash))
|
|
return 1;
|
|
strbuf_addstr(sb, find_unique_abbrev(commit->tree->object.sha1,
|
|
c->pretty_ctx->abbrev));
|
|
c->abbrev_tree_hash.len = sb->len - c->abbrev_tree_hash.off;
|
|
return 1;
|
|
case 'P': /* parent hashes */
|
|
for (p = commit->parents; p; p = p->next) {
|
|
if (p != commit->parents)
|
|
strbuf_addch(sb, ' ');
|
|
strbuf_addstr(sb, sha1_to_hex(p->item->object.sha1));
|
|
}
|
|
return 1;
|
|
case 'p': /* abbreviated parent hashes */
|
|
if (add_again(sb, &c->abbrev_parent_hashes))
|
|
return 1;
|
|
for (p = commit->parents; p; p = p->next) {
|
|
if (p != commit->parents)
|
|
strbuf_addch(sb, ' ');
|
|
strbuf_addstr(sb, find_unique_abbrev(
|
|
p->item->object.sha1,
|
|
c->pretty_ctx->abbrev));
|
|
}
|
|
c->abbrev_parent_hashes.len = sb->len -
|
|
c->abbrev_parent_hashes.off;
|
|
return 1;
|
|
case 'm': /* left/right/bottom */
|
|
strbuf_addstr(sb, get_revision_mark(NULL, commit));
|
|
return 1;
|
|
case 'd':
|
|
format_decoration(sb, commit);
|
|
return 1;
|
|
case 'g': /* reflog info */
|
|
switch(placeholder[1]) {
|
|
case 'd': /* reflog selector */
|
|
case 'D':
|
|
if (c->pretty_ctx->reflog_info)
|
|
get_reflog_selector(sb,
|
|
c->pretty_ctx->reflog_info,
|
|
c->pretty_ctx->date_mode,
|
|
c->pretty_ctx->date_mode_explicit,
|
|
(placeholder[1] == 'd'));
|
|
return 2;
|
|
case 's': /* reflog message */
|
|
if (c->pretty_ctx->reflog_info)
|
|
get_reflog_message(sb, c->pretty_ctx->reflog_info);
|
|
return 2;
|
|
case 'n':
|
|
case 'N':
|
|
case 'e':
|
|
case 'E':
|
|
return format_reflog_person(sb,
|
|
placeholder[1],
|
|
c->pretty_ctx->reflog_info,
|
|
c->pretty_ctx->date_mode);
|
|
}
|
|
return 0; /* unknown %g placeholder */
|
|
case 'N':
|
|
if (c->pretty_ctx->show_notes) {
|
|
format_display_notes(commit->object.sha1, sb,
|
|
get_log_output_encoding(), 0);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (placeholder[0] == 'G') {
|
|
if (!c->commit_signature_parsed)
|
|
parse_commit_signature(c);
|
|
switch (placeholder[1]) {
|
|
case 'G':
|
|
if (c->signature.gpg_output)
|
|
strbuf_addstr(sb, c->signature.gpg_output);
|
|
break;
|
|
case '?':
|
|
switch (c->signature.good_bad) {
|
|
case 'G':
|
|
case 'B':
|
|
strbuf_addch(sb, c->signature.good_bad);
|
|
}
|
|
break;
|
|
case 'S':
|
|
if (c->signature.signer)
|
|
strbuf_addstr(sb, c->signature.signer);
|
|
break;
|
|
}
|
|
return 2;
|
|
}
|
|
|
|
|
|
/* For the rest we have to parse the commit header. */
|
|
if (!c->commit_header_parsed)
|
|
parse_commit_header(c);
|
|
|
|
switch (placeholder[0]) {
|
|
case 'a': /* author ... */
|
|
return format_person_part(sb, placeholder[1],
|
|
msg + c->author.off, c->author.len,
|
|
c->pretty_ctx->date_mode);
|
|
case 'c': /* committer ... */
|
|
return format_person_part(sb, placeholder[1],
|
|
msg + c->committer.off, c->committer.len,
|
|
c->pretty_ctx->date_mode);
|
|
case 'e': /* encoding */
|
|
strbuf_add(sb, msg + c->encoding.off, c->encoding.len);
|
|
return 1;
|
|
case 'B': /* raw body */
|
|
/* message_off is always left at the initial newline */
|
|
strbuf_addstr(sb, msg + c->message_off + 1);
|
|
return 1;
|
|
}
|
|
|
|
/* Now we need to parse the commit message. */
|
|
if (!c->commit_message_parsed)
|
|
parse_commit_message(c);
|
|
|
|
switch (placeholder[0]) {
|
|
case 's': /* subject */
|
|
format_subject(sb, msg + c->subject_off, " ");
|
|
return 1;
|
|
case 'f': /* sanitized subject */
|
|
format_sanitized_subject(sb, msg + c->subject_off);
|
|
return 1;
|
|
case 'b': /* body */
|
|
strbuf_addstr(sb, msg + c->body_off);
|
|
return 1;
|
|
}
|
|
return 0; /* unknown placeholder */
|
|
}
|
|
|
|
static size_t format_commit_item(struct strbuf *sb, const char *placeholder,
|
|
void *context)
|
|
{
|
|
int consumed;
|
|
size_t orig_len;
|
|
enum {
|
|
NO_MAGIC,
|
|
ADD_LF_BEFORE_NON_EMPTY,
|
|
DEL_LF_BEFORE_EMPTY,
|
|
ADD_SP_BEFORE_NON_EMPTY
|
|
} magic = NO_MAGIC;
|
|
|
|
switch (placeholder[0]) {
|
|
case '-':
|
|
magic = DEL_LF_BEFORE_EMPTY;
|
|
break;
|
|
case '+':
|
|
magic = ADD_LF_BEFORE_NON_EMPTY;
|
|
break;
|
|
case ' ':
|
|
magic = ADD_SP_BEFORE_NON_EMPTY;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (magic != NO_MAGIC)
|
|
placeholder++;
|
|
|
|
orig_len = sb->len;
|
|
consumed = format_commit_one(sb, placeholder, context);
|
|
if (magic == NO_MAGIC)
|
|
return consumed;
|
|
|
|
if ((orig_len == sb->len) && magic == DEL_LF_BEFORE_EMPTY) {
|
|
while (sb->len && sb->buf[sb->len - 1] == '\n')
|
|
strbuf_setlen(sb, sb->len - 1);
|
|
} else if (orig_len != sb->len) {
|
|
if (magic == ADD_LF_BEFORE_NON_EMPTY)
|
|
strbuf_insert(sb, orig_len, "\n", 1);
|
|
else if (magic == ADD_SP_BEFORE_NON_EMPTY)
|
|
strbuf_insert(sb, orig_len, " ", 1);
|
|
}
|
|
return consumed + 1;
|
|
}
|
|
|
|
static size_t userformat_want_item(struct strbuf *sb, const char *placeholder,
|
|
void *context)
|
|
{
|
|
struct userformat_want *w = context;
|
|
|
|
if (*placeholder == '+' || *placeholder == '-' || *placeholder == ' ')
|
|
placeholder++;
|
|
|
|
switch (*placeholder) {
|
|
case 'N':
|
|
w->notes = 1;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void userformat_find_requirements(const char *fmt, struct userformat_want *w)
|
|
{
|
|
struct strbuf dummy = STRBUF_INIT;
|
|
|
|
if (!fmt) {
|
|
if (!user_format)
|
|
return;
|
|
fmt = user_format;
|
|
}
|
|
strbuf_expand(&dummy, fmt, userformat_want_item, w);
|
|
strbuf_release(&dummy);
|
|
}
|
|
|
|
void format_commit_message(const struct commit *commit,
|
|
const char *format, struct strbuf *sb,
|
|
const struct pretty_print_context *pretty_ctx)
|
|
{
|
|
struct format_commit_context context;
|
|
static const char utf8[] = "UTF-8";
|
|
const char *output_enc = pretty_ctx->output_encoding;
|
|
|
|
memset(&context, 0, sizeof(context));
|
|
context.commit = commit;
|
|
context.pretty_ctx = pretty_ctx;
|
|
context.wrap_start = sb->len;
|
|
context.message = commit->buffer;
|
|
if (output_enc) {
|
|
char *enc = get_header(commit, "encoding");
|
|
if (strcmp(enc ? enc : utf8, output_enc)) {
|
|
context.message = logmsg_reencode(commit, output_enc);
|
|
if (!context.message)
|
|
context.message = commit->buffer;
|
|
}
|
|
free(enc);
|
|
}
|
|
|
|
strbuf_expand(sb, format, format_commit_item, &context);
|
|
rewrap_message_tail(sb, &context, 0, 0, 0);
|
|
|
|
if (context.message != commit->buffer)
|
|
free(context.message);
|
|
free(context.signature.gpg_output);
|
|
free(context.signature.signer);
|
|
}
|
|
|
|
static void pp_header(const struct pretty_print_context *pp,
|
|
const char *encoding,
|
|
const struct commit *commit,
|
|
const char **msg_p,
|
|
struct strbuf *sb)
|
|
{
|
|
int parents_shown = 0;
|
|
|
|
for (;;) {
|
|
const char *line = *msg_p;
|
|
int linelen = get_one_line(*msg_p);
|
|
|
|
if (!linelen)
|
|
return;
|
|
*msg_p += linelen;
|
|
|
|
if (linelen == 1)
|
|
/* End of header */
|
|
return;
|
|
|
|
if (pp->fmt == CMIT_FMT_RAW) {
|
|
strbuf_add(sb, line, linelen);
|
|
continue;
|
|
}
|
|
|
|
if (!memcmp(line, "parent ", 7)) {
|
|
if (linelen != 48)
|
|
die("bad parent line in commit");
|
|
continue;
|
|
}
|
|
|
|
if (!parents_shown) {
|
|
struct commit_list *parent;
|
|
int num;
|
|
for (parent = commit->parents, num = 0;
|
|
parent;
|
|
parent = parent->next, num++)
|
|
;
|
|
/* with enough slop */
|
|
strbuf_grow(sb, num * 50 + 20);
|
|
add_merge_info(pp, sb, commit);
|
|
parents_shown = 1;
|
|
}
|
|
|
|
/*
|
|
* MEDIUM == DEFAULT shows only author with dates.
|
|
* FULL shows both authors but not dates.
|
|
* FULLER shows both authors and dates.
|
|
*/
|
|
if (!memcmp(line, "author ", 7)) {
|
|
strbuf_grow(sb, linelen + 80);
|
|
pp_user_info(pp, "Author", sb, line + 7, encoding);
|
|
}
|
|
if (!memcmp(line, "committer ", 10) &&
|
|
(pp->fmt == CMIT_FMT_FULL || pp->fmt == CMIT_FMT_FULLER)) {
|
|
strbuf_grow(sb, linelen + 80);
|
|
pp_user_info(pp, "Commit", sb, line + 10, encoding);
|
|
}
|
|
}
|
|
}
|
|
|
|
void pp_title_line(const struct pretty_print_context *pp,
|
|
const char **msg_p,
|
|
struct strbuf *sb,
|
|
const char *encoding,
|
|
int need_8bit_cte)
|
|
{
|
|
struct strbuf title;
|
|
|
|
strbuf_init(&title, 80);
|
|
*msg_p = format_subject(&title, *msg_p,
|
|
pp->preserve_subject ? "\n" : " ");
|
|
|
|
strbuf_grow(sb, title.len + 1024);
|
|
if (pp->subject) {
|
|
strbuf_addstr(sb, pp->subject);
|
|
add_rfc2047(sb, title.buf, title.len, encoding);
|
|
} else {
|
|
strbuf_addbuf(sb, &title);
|
|
}
|
|
strbuf_addch(sb, '\n');
|
|
|
|
if (need_8bit_cte > 0) {
|
|
const char *header_fmt =
|
|
"MIME-Version: 1.0\n"
|
|
"Content-Type: text/plain; charset=%s\n"
|
|
"Content-Transfer-Encoding: 8bit\n";
|
|
strbuf_addf(sb, header_fmt, encoding);
|
|
}
|
|
if (pp->after_subject) {
|
|
strbuf_addstr(sb, pp->after_subject);
|
|
}
|
|
if (pp->fmt == CMIT_FMT_EMAIL) {
|
|
strbuf_addch(sb, '\n');
|
|
}
|
|
strbuf_release(&title);
|
|
}
|
|
|
|
void pp_remainder(const struct pretty_print_context *pp,
|
|
const char **msg_p,
|
|
struct strbuf *sb,
|
|
int indent)
|
|
{
|
|
int first = 1;
|
|
for (;;) {
|
|
const char *line = *msg_p;
|
|
int linelen = get_one_line(line);
|
|
*msg_p += linelen;
|
|
|
|
if (!linelen)
|
|
break;
|
|
|
|
if (is_empty_line(line, &linelen)) {
|
|
if (first)
|
|
continue;
|
|
if (pp->fmt == CMIT_FMT_SHORT)
|
|
break;
|
|
}
|
|
first = 0;
|
|
|
|
strbuf_grow(sb, linelen + indent + 20);
|
|
if (indent) {
|
|
memset(sb->buf + sb->len, ' ', indent);
|
|
strbuf_setlen(sb, sb->len + indent);
|
|
}
|
|
strbuf_add(sb, line, linelen);
|
|
strbuf_addch(sb, '\n');
|
|
}
|
|
}
|
|
|
|
char *reencode_commit_message(const struct commit *commit, const char **encoding_p)
|
|
{
|
|
const char *encoding;
|
|
|
|
encoding = get_log_output_encoding();
|
|
if (encoding_p)
|
|
*encoding_p = encoding;
|
|
return logmsg_reencode(commit, encoding);
|
|
}
|
|
|
|
void pretty_print_commit(const struct pretty_print_context *pp,
|
|
const struct commit *commit,
|
|
struct strbuf *sb)
|
|
{
|
|
unsigned long beginning_of_body;
|
|
int indent = 4;
|
|
const char *msg = commit->buffer;
|
|
char *reencoded;
|
|
const char *encoding;
|
|
int need_8bit_cte = pp->need_8bit_cte;
|
|
|
|
if (pp->fmt == CMIT_FMT_USERFORMAT) {
|
|
format_commit_message(commit, user_format, sb, pp);
|
|
return;
|
|
}
|
|
|
|
reencoded = reencode_commit_message(commit, &encoding);
|
|
if (reencoded) {
|
|
msg = reencoded;
|
|
}
|
|
|
|
if (pp->fmt == CMIT_FMT_ONELINE || pp->fmt == CMIT_FMT_EMAIL)
|
|
indent = 0;
|
|
|
|
/*
|
|
* We need to check and emit Content-type: to mark it
|
|
* as 8-bit if we haven't done so.
|
|
*/
|
|
if (pp->fmt == CMIT_FMT_EMAIL && need_8bit_cte == 0) {
|
|
int i, ch, in_body;
|
|
|
|
for (in_body = i = 0; (ch = msg[i]); i++) {
|
|
if (!in_body) {
|
|
/* author could be non 7-bit ASCII but
|
|
* the log may be so; skip over the
|
|
* header part first.
|
|
*/
|
|
if (ch == '\n' && msg[i+1] == '\n')
|
|
in_body = 1;
|
|
}
|
|
else if (non_ascii(ch)) {
|
|
need_8bit_cte = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
pp_header(pp, encoding, commit, &msg, sb);
|
|
if (pp->fmt != CMIT_FMT_ONELINE && !pp->subject) {
|
|
strbuf_addch(sb, '\n');
|
|
}
|
|
|
|
/* Skip excess blank lines at the beginning of body, if any... */
|
|
msg = skip_empty_lines(msg);
|
|
|
|
/* These formats treat the title line specially. */
|
|
if (pp->fmt == CMIT_FMT_ONELINE || pp->fmt == CMIT_FMT_EMAIL)
|
|
pp_title_line(pp, &msg, sb, encoding, need_8bit_cte);
|
|
|
|
beginning_of_body = sb->len;
|
|
if (pp->fmt != CMIT_FMT_ONELINE)
|
|
pp_remainder(pp, &msg, sb, indent);
|
|
strbuf_rtrim(sb);
|
|
|
|
/* Make sure there is an EOLN for the non-oneline case */
|
|
if (pp->fmt != CMIT_FMT_ONELINE)
|
|
strbuf_addch(sb, '\n');
|
|
|
|
/*
|
|
* The caller may append additional body text in e-mail
|
|
* format. Make sure we did not strip the blank line
|
|
* between the header and the body.
|
|
*/
|
|
if (pp->fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body)
|
|
strbuf_addch(sb, '\n');
|
|
|
|
if (pp->show_notes)
|
|
format_display_notes(commit->object.sha1, sb, encoding,
|
|
NOTES_SHOW_HEADER | NOTES_INDENT);
|
|
|
|
free(reencoded);
|
|
}
|
|
|
|
void pp_commit_easy(enum cmit_fmt fmt, const struct commit *commit,
|
|
struct strbuf *sb)
|
|
{
|
|
struct pretty_print_context pp = {0};
|
|
pp.fmt = fmt;
|
|
pretty_print_commit(&pp, commit, sb);
|
|
}
|