81 lines
2.5 KiB
C
81 lines
2.5 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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* 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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* 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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