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ac751a0b43
This reverts commit ba35480439.
CGit uses these symbols to output the correct HTML around graph
elements. Making these symbols private means that CGit cannot be
updated to use Git 1.8.0 or newer, so let's not do that.
On top of the revert, also add comments so that we avoid reintroducing
this problem in the future and suggest to those modifying this API
that they might want to discuss it with the CGit developers.
Signed-off-by: John Keeping <john@keeping.me.uk>
Acked-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
115 lines
3.9 KiB
C
115 lines
3.9 KiB
C
#ifndef GRAPH_H
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#define GRAPH_H
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/* A graph is a pointer to this opaque structure */
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struct git_graph;
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/*
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* Set up a custom scheme for column colors.
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*
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* The default column color scheme inserts ANSI color escapes to colorize
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* the graph. The various color escapes are stored in an array of strings
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* where each entry corresponds to a color, except for the last entry,
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* which denotes the escape for resetting the color back to the default.
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* When generating the graph, strings from this array are inserted before
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* and after the various column characters.
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*
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* This function allows you to enable a custom array of color escapes.
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* The 'colors_max' argument is the index of the last "reset" entry.
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*
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* This functions must be called BEFORE graph_init() is called.
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*
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* NOTE: This function isn't used in Git outside graph.c but it is used
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* by CGit (http://git.zx2c4.com/cgit/) to use HTML for colors.
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*/
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void graph_set_column_colors(const char **colors, unsigned short colors_max);
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/*
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* Create a new struct git_graph.
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*/
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struct git_graph *graph_init(struct rev_info *opt);
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/*
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* Update a git_graph with a new commit.
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* This will cause the graph to begin outputting lines for the new commit
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* the next time graph_next_line() is called.
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*
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* If graph_update() is called before graph_is_commit_finished() returns 1,
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* the next call to graph_next_line() will output an ellipsis ("...")
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* to indicate that a portion of the graph is missing.
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*/
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void graph_update(struct git_graph *graph, struct commit *commit);
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/*
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* Determine if a graph has finished outputting lines for the current
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* commit.
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*
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* Returns 1 if graph_next_line() needs to be called again before
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* graph_update() should be called. Returns 0 if no more lines are needed
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* for this commit. If 0 is returned, graph_next_line() may still be
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* called without calling graph_update(), and it will merely output
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* appropriate "vertical padding" in the graph.
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*/
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int graph_is_commit_finished(struct git_graph const *graph);
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/*
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* Output the next line for a graph.
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* This formats the next graph line into the specified strbuf. It is not
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* terminated with a newline.
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*
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* Returns 1 if the line includes the current commit, and 0 otherwise.
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* graph_next_line() will return 1 exactly once for each time
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* graph_update() is called.
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*
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* NOTE: This function isn't used in Git outside graph.c but it is used
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* by CGit (http://git.zx2c4.com/cgit/) to wrap HTML around graph lines.
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*/
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int graph_next_line(struct git_graph *graph, struct strbuf *sb);
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/*
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* graph_show_*: helper functions for printing to stdout
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*/
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/*
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* If the graph is non-NULL, print the history graph to stdout,
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* up to and including the line containing this commit.
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* Does not print a terminating newline on the last line.
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*/
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void graph_show_commit(struct git_graph *graph);
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/*
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* If the graph is non-NULL, print one line of the history graph to stdout.
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* Does not print a terminating newline on the last line.
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*/
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void graph_show_oneline(struct git_graph *graph);
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/*
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* If the graph is non-NULL, print one line of vertical graph padding to
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* stdout. Does not print a terminating newline on the last line.
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*/
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void graph_show_padding(struct git_graph *graph);
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/*
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* If the graph is non-NULL, print the rest of the history graph for this
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* commit to stdout. Does not print a terminating newline on the last line.
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*/
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int graph_show_remainder(struct git_graph *graph);
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/*
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* Print a commit message strbuf and the remainder of the graph to stdout.
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*
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* This is similar to graph_show_strbuf(), but it always prints the
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* remainder of the graph.
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*
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* If the strbuf ends with a newline, the output printed by
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* graph_show_commit_msg() will end with a newline. If the strbuf is
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* missing a terminating newline (including if it is empty), the output
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* printed by graph_show_commit_msg() will also be missing a terminating
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* newline.
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*/
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void graph_show_commit_msg(struct git_graph *graph, struct strbuf const *sb);
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#endif /* GRAPH_H */
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