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Add generic commit "pretty print" function.

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It's really just the header printign function from diff-tree.c,
and it's usable for other things too.
This commit is contained in:
Linus Torvalds 2005-06-01 08:34:23 -07:00
parent ef6a46e6ea
commit e3bc7a3bc7
3 changed files with 86 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

80
commit.c
View File

@ -174,3 +174,83 @@ struct commit *pop_most_recent_commit(struct commit_list **list,
}
return ret;
}
/*
* Generic support for pretty-printing the header
*/
static int get_one_line(const char *msg, unsigned long len)
{
int ret = 0;
while (len--) {
char c = *msg++;
ret++;
if (c == '\n')
break;
if (!c)
return 0;
}
return ret;
}
static int add_author_info(char *buf, const char *line, int len)
{
char *date;
unsigned int namelen;
unsigned long time;
int tz;
line += strlen("author ");
date = strchr(line, '>');
if (!date)
return 0;
namelen = ++date - line;
time = strtoul(date, &date, 10);
tz = strtol(date, NULL, 10);
return sprintf(buf, "Author: %.*s\nDate: %s\n",
namelen, line,
show_date(time, tz));
}
unsigned long pretty_print_commit(const char *msg, unsigned long len, char *buf, unsigned long space)
{
int hdr = 1;
unsigned long offset = 0;
for (;;) {
const char *line = msg;
int linelen = get_one_line(msg, len);
if (!linelen)
break;
/*
* We want some slop for indentation and a possible
* final "...". Thus the "+ 20".
*/
if (offset + linelen + 20 > space) {
memcpy(buf + offset, " ...\n", 8);
offset += 8;
break;
}
msg += linelen;
len -= linelen;
if (linelen == 1)
hdr = 0;
if (hdr) {
if (!memcmp(line, "author ", 7))
offset += add_author_info(buf + offset, line, linelen);
continue;
}
memset(buf + offset, ' ', 4);
memcpy(buf + offset + 4, line, linelen);
offset += linelen + 4;
}
/* Make sure there is an EOLN */
if (buf[offset - 1] != '\n')
buf[offset++] = '\n';
buf[offset] = '\0';
return offset;
}

3
commit.h
View File

@ -32,6 +32,9 @@ void free_commit_list(struct commit_list *list);
void sort_by_date(struct commit_list **list);
extern unsigned long pretty_print_commit(const char *msg, unsigned long len, char *buf, unsigned long space);
/** Removes the first commit from a list sorted by date, and adds all
* of its parents.
**/

72
diff-tree.c
View File

@ -1,6 +1,7 @@
#include <ctype.h>
#include "cache.h"
#include "diff.h"
#include "commit.h"
static int show_root_diff = 0;
static int verbose_header = 0;
@ -311,38 +312,6 @@ static int diff_root_tree(const unsigned char *new, const char *base)
return retval;
}
static int get_one_line(const char *msg, unsigned long len)
{
int ret = 0;
while (len--) {
ret++;
if (*msg++ == '\n')
break;
}
return ret;
}
static int add_author_info(char *buf, const char *line, int len)
{
char *date;
unsigned int namelen;
unsigned long time;
int tz;
line += strlen("author ");
date = strchr(line, '>');
if (!date)
return 0;
namelen = ++date - line;
time = strtoul(date, &date, 10);
tz = strtol(date, NULL, 10);
return sprintf(buf, "Author: %.*s\nDate: %s\n",
namelen, line,
show_date(time, tz));
}
static char *generate_header(const char *commit, const char *parent, const char *msg, unsigned long len)
{
static char this_header[16384];
@ -350,44 +319,9 @@ static char *generate_header(const char *commit, const char *parent, const char
offset = sprintf(this_header, "%s%s (from %s)\n", header_prefix, commit, parent);
if (verbose_header) {
int hdr = 1;
for (;;) {
const char *line = msg;
int linelen = get_one_line(msg, len);
if (!linelen)
break;
/*
* We want some slop for indentation and a possible
* final "...". Thus the "+ 20".
*/
if (offset + linelen + 20 > sizeof(this_header)) {
memcpy(this_header + offset, " ...\n", 8);
offset += 8;
break;
}
msg += linelen;
len -= linelen;
if (linelen == 1)
hdr = 0;
if (hdr) {
if (!memcmp(line, "author ", 7))
offset += add_author_info(this_header + offset, line, linelen);
continue;
}
memset(this_header + offset, ' ', 4);
memcpy(this_header + offset + 4, line, linelen);
offset += linelen + 4;
}
/* Make sure there is an EOLN */
if (this_header[offset-1] != '\n')
this_header[offset++] = '\n';
/* Add _another_ EOLN if we are doing diff output */
offset += pretty_print_commit(msg, len, this_header + offset, sizeof(this_header) - offset);
this_header[offset++] = '\n';
this_header[offset] = 0;
this_header[offset++] = 0;
}
return this_header;