diff options
| -rw-r--r-- | color.h | 1 | ||||
| -rw-r--r-- | graph.c | 246 |
2 files changed, 199 insertions, 48 deletions
@@ -11,6 +11,7 @@ #define GIT_COLOR_GREEN "\033[32m" #define GIT_COLOR_YELLOW "\033[33m" #define GIT_COLOR_BLUE "\033[34m" +#define GIT_COLOR_MAGENTA "\033[35m" #define GIT_COLOR_CYAN "\033[36m" #define GIT_COLOR_BG_RED "\033[41m" @@ -1,5 +1,6 @@ #include "cache.h" #include "commit.h" +#include "color.h" #include "graph.h" #include "diff.h" #include "revision.h" @@ -43,10 +44,6 @@ static void graph_show_strbuf(struct git_graph *graph, struct strbuf const *sb); /* * TODO: - * - Add colors to the graph. - * Pick a color for each column, and print all characters - * in that column with the specified color. - * * - Limit the number of columns, similar to the way gitk does. * If we reach more than a specified number of columns, omit * sections of some columns. @@ -72,9 +69,10 @@ struct column { */ struct commit *commit; /* - * XXX: Once we add support for colors, struct column could also - * contain the color of its branch line. + * The color to (optionally) print this column in. This is an + * index into column_colors. */ + unsigned short color; }; enum graph_state { @@ -86,6 +84,41 @@ enum graph_state { GRAPH_COLLAPSING }; +/* + * The list of available column colors. + */ +static char column_colors[][COLOR_MAXLEN] = { + GIT_COLOR_RED, + GIT_COLOR_GREEN, + GIT_COLOR_YELLOW, + GIT_COLOR_BLUE, + GIT_COLOR_MAGENTA, + GIT_COLOR_CYAN, + GIT_COLOR_BOLD GIT_COLOR_RED, + GIT_COLOR_BOLD GIT_COLOR_GREEN, + GIT_COLOR_BOLD GIT_COLOR_YELLOW, + GIT_COLOR_BOLD GIT_COLOR_BLUE, + GIT_COLOR_BOLD GIT_COLOR_MAGENTA, + GIT_COLOR_BOLD GIT_COLOR_CYAN, +}; + +#define COLUMN_COLORS_MAX (ARRAY_SIZE(column_colors)) + +static const char *column_get_color_code(const struct column *c) +{ + return column_colors[c->color]; +} + +static void strbuf_write_column(struct strbuf *sb, const struct column *c, + char col_char) +{ + if (c->color < COLUMN_COLORS_MAX) + strbuf_addstr(sb, column_get_color_code(c)); + strbuf_addch(sb, col_char); + if (c->color < COLUMN_COLORS_MAX) + strbuf_addstr(sb, GIT_COLOR_RESET); +} + struct git_graph { /* * The commit currently being processed @@ -185,6 +218,11 @@ struct git_graph { * temporary array each time we have to output a collapsing line. */ int *new_mapping; + /* + * The current default column color being used. This is + * stored as an index into the array column_colors. + */ + unsigned short default_column_color; }; struct git_graph *graph_init(struct rev_info *opt) @@ -201,6 +239,7 @@ struct git_graph *graph_init(struct rev_info *opt) graph->num_columns = 0; graph->num_new_columns = 0; graph->mapping_size = 0; + graph->default_column_color = 0; /* * Allocate a reasonably large default number of columns @@ -312,6 +351,33 @@ static struct commit_list *first_interesting_parent(struct git_graph *graph) return next_interesting_parent(graph, parents); } +static unsigned short graph_get_current_column_color(const struct git_graph *graph) +{ + if (!DIFF_OPT_TST(&graph->revs->diffopt, COLOR_DIFF)) + return COLUMN_COLORS_MAX; + return graph->default_column_color; +} + +/* + * Update the graph's default column color. + */ +static void graph_increment_column_color(struct git_graph *graph) +{ + graph->default_column_color = (graph->default_column_color + 1) % + COLUMN_COLORS_MAX; +} + +static unsigned short graph_find_commit_color(const struct git_graph *graph, + const struct commit *commit) +{ + int i; + for (i = 0; i < graph->num_columns; i++) { + if (graph->columns[i].commit == commit) + return graph->columns[i].color; + } + return graph_get_current_column_color(graph); +} + static void graph_insert_into_new_columns(struct git_graph *graph, struct commit *commit, int *mapping_index) @@ -334,6 +400,7 @@ static void graph_insert_into_new_columns(struct git_graph *graph, * This commit isn't already in new_columns. Add it. */ graph->new_columns[graph->num_new_columns].commit = commit; + graph->new_columns[graph->num_new_columns].color = graph_find_commit_color(graph, commit); graph->mapping[*mapping_index] = graph->num_new_columns; *mapping_index += 2; graph->num_new_columns++; @@ -445,6 +512,12 @@ static void graph_update_columns(struct git_graph *graph) for (parent = first_interesting_parent(graph); parent; parent = next_interesting_parent(graph, parent)) { + /* + * If this is a merge increment the current + * color. + */ + if (graph->num_parents > 1) + graph_increment_column_color(graph); graph_insert_into_new_columns(graph, parent->item, &mapping_idx); @@ -560,7 +633,8 @@ static int graph_is_mapping_correct(struct git_graph *graph) return 1; } -static void graph_pad_horizontally(struct git_graph *graph, struct strbuf *sb) +static void graph_pad_horizontally(struct git_graph *graph, struct strbuf *sb, + int chars_written) { /* * Add additional spaces to the end of the strbuf, so that all @@ -570,10 +644,10 @@ static void graph_pad_horizontally(struct git_graph *graph, struct strbuf *sb) * aligned for the entire commit. */ int extra; - if (sb->len >= graph->width) + if (chars_written >= graph->width) return; - extra = graph->width - sb->len; + extra = graph->width - chars_written; strbuf_addf(sb, "%*s", (int) extra, ""); } @@ -596,10 +670,11 @@ static void graph_output_padding_line(struct git_graph *graph, * Output a padding row, that leaves all branch lines unchanged */ for (i = 0; i < graph->num_new_columns; i++) { - strbuf_addstr(sb, "| "); + strbuf_write_column(sb, &graph->new_columns[i], '|'); + strbuf_addch(sb, ' '); } - graph_pad_horizontally(graph, sb); + graph_pad_horizontally(graph, sb, graph->num_new_columns * 2); } static void graph_output_skip_line(struct git_graph *graph, struct strbuf *sb) @@ -609,7 +684,7 @@ static void graph_output_skip_line(struct git_graph *graph, struct strbuf *sb) * of the graph is missing. */ strbuf_addstr(sb, "..."); - graph_pad_horizontally(graph, sb); + graph_pad_horizontally(graph, sb, 3); if (graph->num_parents >= 3 && graph->commit_index < (graph->num_columns - 1)) @@ -623,6 +698,7 @@ static void graph_output_pre_commit_line(struct git_graph *graph, { int num_expansion_rows; int i, seen_this; + int chars_written; /* * This function formats a row that increases the space around a commit @@ -645,11 +721,14 @@ static void graph_output_pre_commit_line(struct git_graph *graph, * Output the row */ seen_this = 0; + chars_written = 0; for (i = 0; i < graph->num_columns; i++) { struct column *col = &graph->columns[i]; if (col->commit == graph->commit) { seen_this = 1; - strbuf_addf(sb, "| %*s", graph->expansion_row, ""); + strbuf_write_column(sb, col, '|'); + strbuf_addf(sb, " %*s", graph->expansion_row, ""); + chars_written += 2 + graph->expansion_row; } else if (seen_this && (graph->expansion_row == 0)) { /* * This is the first line of the pre-commit output. @@ -662,17 +741,22 @@ static void graph_output_pre_commit_line(struct git_graph *graph, */ if (graph->prev_state == GRAPH_POST_MERGE && graph->prev_commit_index < i) - strbuf_addstr(sb, "\\ "); + strbuf_write_column(sb, col, '\\'); else - strbuf_addstr(sb, "| "); + strbuf_write_column(sb, col, '|'); + chars_written++; } else if (seen_this && (graph->expansion_row > 0)) { - strbuf_addstr(sb, "\\ "); + strbuf_write_column(sb, col, '\\'); + chars_written++; } else { - strbuf_addstr(sb, "| "); + strbuf_write_column(sb, col, '|'); + chars_written++; } + strbuf_addch(sb, ' '); + chars_written++; } - graph_pad_horizontally(graph, sb); + graph_pad_horizontally(graph, sb, chars_written); /* * Increment graph->expansion_row, @@ -714,10 +798,34 @@ static void graph_output_commit_char(struct git_graph *graph, struct strbuf *sb) strbuf_addch(sb, '*'); } +/* + * Draw an octopus merge and return the number of characters written. + */ +static int graph_draw_octopus_merge(struct git_graph *graph, + struct strbuf *sb) +{ + /* + * Here dashless_commits represents the number of parents + * which don't need to have dashes (because their edges fit + * neatly under the commit). + */ + const int dashless_commits = 2; + int col_num, i; + int num_dashes = + ((graph->num_parents - dashless_commits) * 2) - 1; + for (i = 0; i < num_dashes; i++) { + col_num = (i / 2) + dashless_commits; + strbuf_write_column(sb, &graph->new_columns[col_num], '-'); + } + col_num = (i / 2) + dashless_commits; + strbuf_write_column(sb, &graph->new_columns[col_num], '.'); + return num_dashes + 1; +} + static void graph_output_commit_line(struct git_graph *graph, struct strbuf *sb) { int seen_this = 0; - int i, j; + int i, chars_written; /* * Output the row containing this commit @@ -727,7 +835,9 @@ static void graph_output_commit_line(struct git_graph *graph, struct strbuf *sb) * children that we have already processed.) */ seen_this = 0; + chars_written = 0; for (i = 0; i <= graph->num_columns; i++) { + struct column *col = &graph->columns[i]; struct commit *col_commit; if (i == graph->num_columns) { if (seen_this) @@ -740,18 +850,14 @@ static void graph_output_commit_line(struct git_graph *graph, struct strbuf *sb) if (col_commit == graph->commit) { seen_this = 1; graph_output_commit_char(graph, sb); + chars_written++; - if (graph->num_parents < 3) - strbuf_addch(sb, ' '); - else { - int num_dashes = - ((graph->num_parents - 2) * 2) - 1; - for (j = 0; j < num_dashes; j++) - strbuf_addch(sb, '-'); - strbuf_addstr(sb, ". "); - } + if (graph->num_parents > 3) + chars_written += graph_draw_octopus_merge(graph, + sb); } else if (seen_this && (graph->num_parents > 2)) { - strbuf_addstr(sb, "\\ "); + strbuf_write_column(sb, col, '\\'); + chars_written++; } else if (seen_this && (graph->num_parents == 2)) { /* * This is a 2-way merge commit. @@ -768,15 +874,19 @@ static void graph_output_commit_line(struct git_graph *graph, struct strbuf *sb) */ if (graph->prev_state == GRAPH_POST_MERGE && graph->prev_commit_index < i) - strbuf_addstr(sb, "\\ "); + strbuf_write_column(sb, col, '\\'); else - strbuf_addstr(sb, "| "); + strbuf_write_column(sb, col, '|'); + chars_written++; } else { - strbuf_addstr(sb, "| "); + strbuf_write_column(sb, col, '|'); + chars_written++; } + strbuf_addch(sb, ' '); + chars_written++; } - graph_pad_horizontally(graph, sb); + graph_pad_horizontally(graph, sb, chars_written); /* * Update graph->state @@ -789,37 +899,75 @@ static void graph_output_commit_line(struct git_graph *graph, struct strbuf *sb) graph_update_state(graph, GRAPH_COLLAPSING); } +static struct column *find_new_column_by_commit(struct git_graph *graph, + struct commit *commit) +{ + int i; + for (i = 0; i < graph->num_new_columns; i++) { + if (graph->new_columns[i].commit == commit) + return &graph->new_columns[i]; + } + return 0; +} + static void graph_output_post_merge_line(struct git_graph *graph, struct strbuf *sb) { int seen_this = 0; - int i, j; + int i, j, chars_written; /* * Output the post-merge row */ + chars_written = 0; for (i = 0; i <= graph->num_columns; i++) { + struct column *col = &graph->columns[i]; struct commit *col_commit; if (i == graph->num_columns) { if (seen_this) break; col_commit = graph->commit; } else { - col_commit = graph->columns[i].commit; + col_commit = col->commit; } if (col_commit == graph->commit) { + /* + * Since the current commit is a merge find + * the columns for the parent commits in + * new_columns and use those to format the + * edges. + */ + struct commit_list *parents = NULL; + struct column *par_column; seen_this = 1; - strbuf_addch(sb, '|'); - for (j = 0; j < graph->num_parents - 1; j++) - strbuf_addstr(sb, "\\ "); + parents = first_interesting_parent(graph); + assert(parents); + par_column = find_new_column_by_commit(graph, parents->item); + assert(par_column); + + strbuf_write_column(sb, par_column, '|'); + chars_written++; + for (j = 0; j < graph->num_parents - 1; j++) { + parents = next_interesting_parent(graph, parents); + assert(parents); + par_column = find_new_column_by_commit(graph, parents->item); + assert(par_column); + strbuf_write_column(sb, par_column, '\\'); + strbuf_addch(sb, ' '); + } + chars_written += j * 2; } else if (seen_this) { - strbuf_addstr(sb, "\\ "); + strbuf_write_column(sb, col, '\\'); + strbuf_addch(sb, ' '); + chars_written += 2; } else { - strbuf_addstr(sb, "| "); + strbuf_write_column(sb, col, '|'); + strbuf_addch(sb, ' '); + chars_written += 2; } } - graph_pad_horizontally(graph, sb); + graph_pad_horizontally(graph, sb, chars_written); /* * Update graph->state @@ -912,12 +1060,12 @@ static void graph_output_collapsing_line(struct git_graph *graph, struct strbuf if (target < 0) strbuf_addch(sb, ' '); else if (target * 2 == i) - strbuf_addch(sb, '|'); + strbuf_write_column(sb, &graph->new_columns[target], '|'); else - strbuf_addch(sb, '/'); + strbuf_write_column(sb, &graph->new_columns[target], '/'); } - graph_pad_horizontally(graph, sb); + graph_pad_horizontally(graph, sb, graph->mapping_size); /* * Swap mapping and new_mapping @@ -979,9 +1127,10 @@ static void graph_padding_line(struct git_graph *graph, struct strbuf *sb) * children that we have already processed.) */ for (i = 0; i < graph->num_columns; i++) { - struct commit *col_commit = graph->columns[i].commit; + struct column *col = &graph->columns[i]; + struct commit *col_commit = col->commit; if (col_commit == graph->commit) { - strbuf_addch(sb, '|'); + strbuf_write_column(sb, col, '|'); if (graph->num_parents < 3) strbuf_addch(sb, ' '); @@ -991,11 +1140,12 @@ static void graph_padding_line(struct git_graph *graph, struct strbuf *sb) strbuf_addch(sb, ' '); } } else { - strbuf_addstr(sb, "| "); + strbuf_write_column(sb, col, '|'); + strbuf_addch(sb, ' '); } } - graph_pad_horizontally(graph, sb); + graph_pad_horizontally(graph, sb, graph->num_columns); /* * Update graph->prev_state since we have output a padding line |