[PATCH 3/3] log and rev-list: add --graph option
- From
Adam Simpkins <adam@adamsimpkins.net>
- Date
- May 4, 2008, 10:36 UTC
- Message-ID
- <1209897414-10091-4-git-send-email-adam@adamsimpkins.net>
- In-Reply-To
- <1209897414-10091-3-git-send-email-adam@adamsimpkins.net>
This new option causes a text-based representation of the history to be printed to the left of the normal output.
Signed-off-by: Adam Simpkins <adam@adamsimpkins.net> --- Documentation/rev-list-options.txt | 10 +++ Documentation/technical/api-history-graph.txt | 13 +++-- builtin-rev-list.c | 50 +++++++++++++++- log-tree.c | 76 ++++++++++++++++++++++-- revision.c | 26 ++++++++- revision.h | 6 ++- 6 files changed, 163 insertions(+), 18 deletions(-)
diff --git a/Documentation/rev-list-options.txt b/Documentation/rev-list-options.txt index 2648a55..ce6a101 100644 --- a/Documentation/rev-list-options.txt +++ b/Documentation/rev-list-options.txt @@ -75,6 +75,16 @@ you would get an output line this: -xxxxxxx... 1st on a ----------------------------------------------------------------------- +--graph:: + + Draw a text-based graphical representation of the commit history + on the left hand side of the output. This may cause extra lines + to be printed in between commits, in order for the graph history + to be drawn properly. ++ +This implies the '--topo-order' option by default, but the +'--date-order' option may also be specified. + Diff Formatting ~~~~~~~~~~~~~~~ diff --git a/Documentation/technical/api-history-graph.txt b/Documentation/technical/api-history-graph.txt index 5f6465f..ce1c08e 100644 --- a/Documentation/technical/api-history-graph.txt +++ b/Documentation/technical/api-history-graph.txt @@ -74,14 +74,17 @@ state. Calling sequence ---------------- -* Create a `struct git_graph` by calling `graph_init()`. +* Create a `struct git_graph` by calling `graph_init()`. When using the + revision walking API, this is done automatically by `setup_revisions()` if + the '--graph' option is supplied. * Use the revision walking API to walk through a group of contiguous commits. + The `get_revision()` function automatically calls `graph_update()` each time + it is invoked. -* For each commit traversed, call `graph_update()` to move the graph to the - next commit. Once `graph_update()` has been called, call `graph_next_line()` - repeatedly, until `graph_is_commit_finished()` returns non-zero. Each call - to `graph_next_line()` will output a single line of the graph. The resulting +* For each commit, call `graph_next_line()` repeatedly, until + `graph_is_commit_finished()` returns non-zero. Each call go + `graph_next_line()` will output a single line of the graph. The resulting lines will not contain any newlines. `graph_next_line()` returns 1 if the resulting line contains the current commit, or 0 if this is merely a line needed to adjust the graph before or after the current commit. This return diff --git a/builtin-rev-list.c b/builtin-rev-list.c index 476a870..f868290 100644 --- a/builtin-rev-list.c +++ b/builtin-rev-list.c @@ -10,6 +10,7 @@ #include "list-objects.h" #include "builtin.h" #include "log-tree.h" +#include "graph.h" /* bits #0-15 in revision.h */ @@ -52,12 +53,13 @@ static struct rev_info revs; static int bisect_list; static int show_timestamp; -static int hdr_termination; static const char *header_prefix; static void finish_commit(struct commit *commit); static void show_commit(struct commit *commit) { + graph_show_commit(revs.graph); + if (show_timestamp) printf("%lu ", commit->date); if (header_prefix) @@ -96,9 +98,50 @@ static void show_commit(struct commit *commit) pretty_print_commit(revs.commit_format, commit, &buf, revs.abbrev, NULL, NULL, revs.date_mode, 0); - if (buf.len) - printf("%s%c", buf.buf, hdr_termination); + if (revs.graph) { + if (buf.len) { + if (revs.commit_format != CMIT_FMT_ONELINE) + graph_show_oneline(revs.graph); + + graph_show_commit_msg(revs.graph, &buf); + + /* + * Add a newline after the commit message. + * + * Usually, this newline produces a blank + * padding line between entries, in which case + * we need to add graph padding on this line. + * + * However, the commit message may not end in a + * newline. In this case the newline simply + * ends the last line of the commit message, + * and we don't need any graph output. (This + * always happens with CMIT_FMT_ONELINE, and it + * happens with CMIT_FMT_USERFORMAT when the + * format doesn't explicitly end in a newline.) + */ + if (buf.len && buf.buf[buf.len - 1] == '\n') + graph_show_padding(revs.graph); + putchar('\n'); + } else { + /* + * If the message buffer is empty, just show + * the rest of the graph output for this + * commit. + */ + if (graph_show_remainder(revs.graph)) + putchar('\n'); + } + } else { + if (buf.len) { + fwrite(buf.buf, sizeof(char), buf.len, stdout); + putchar('\n'); + } + } strbuf_release(&buf); + } else { + if (graph_show_remainder(revs.graph)) + putchar('\n'); } maybe_flush_or_die(stdout, "stdout"); finish_commit(commit); @@ -592,7 +635,6 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix) } if (revs.commit_format != CMIT_FMT_UNSPECIFIED) { /* The command line has a --pretty */ - hdr_termination = '\n'; if (revs.commit_format == CMIT_FMT_ONELINE) header_prefix = ""; else diff --git a/log-tree.c b/log-tree.c index 74829d7..1474d1f 100644 --- a/log-tree.c +++ b/log-tree.c @@ -1,6 +1,7 @@ #include "cache.h" #include "diff.h" #include "commit.h" +#include "graph.h" #include "log-tree.h" #include "reflog-walk.h" @@ -165,11 +166,16 @@ void log_write_email_headers(struct rev_info *opt, const char *name, } printf("From %s Mon Sep 17 00:00:00 2001\n", name); - if (opt->message_id) + graph_show_oneline(opt->graph); + if (opt->message_id) { printf("Message-Id: <%s>\n", opt->message_id); - if (opt->ref_message_id) + graph_show_oneline(opt->graph); + } + if (opt->ref_message_id) { printf("In-Reply-To: <%s>\nReferences: <%s>\n", opt->ref_message_id, opt->ref_message_id); + graph_show_oneline(opt->graph); + } if (opt->mime_boundary) { static char subject_buffer[1024]; static char buffer[1024]; @@ -220,6 +226,8 @@ void show_log(struct rev_info *opt) opt->loginfo = NULL; if (!opt->verbose_header) { + graph_show_commit(opt->graph); + if (commit->object.flags & BOUNDARY) putchar('-'); else if (commit->object.flags & UNINTERESTING) @@ -234,6 +242,10 @@ void show_log(struct rev_info *opt) if (opt->print_parents) show_parents(commit, abbrev_commit); show_decorations(commit); + if (opt->graph && !graph_is_commit_finished(opt->graph)) { + putchar('\n'); + graph_show_remainder(opt->graph); + } putchar(opt->diffopt.line_termination); return; } @@ -243,11 +255,33 @@ void show_log(struct rev_info *opt) * Otherwise, add a diffopt.line_termination character before all * entries but the first. (IOW, as a separator between entries) */ - if (opt->shown_one && !opt->use_terminator) + if (opt->shown_one && !opt->use_terminator) { + /* + * If entries are separated by a newline, the output + * should look human-readable. If the last entry ended + * with a newline, print the graph output before this + * newline. Otherwise it will end up as a completely blank + * line and will look like a gap in the graph. + * + * If the entry separator is not a newline, the output is + * primarily intended for programmatic consumption, and we + * never want the extra graph output before the entry + * separator. + */ + if (opt->diffopt.line_termination == '\n' && + !opt->missing_newline) + graph_show_padding(opt->graph); putchar(opt->diffopt.line_termination); + } opt->shown_one = 1; /* + * If the history graph was requested, + * print the graph, up to this commit's line + */ + graph_show_commit(opt->graph); + + /* * Print header line of header.. */ @@ -279,8 +313,19 @@ void show_log(struct rev_info *opt) abbrev_commit)); show_decorations(commit); printf("%s", diff_get_color_opt(&opt->diffopt, DIFF_RESET)); - putchar(opt->commit_format == CMIT_FMT_ONELINE ? ' ' : '\n'); + if (opt->commit_format == CMIT_FMT_ONELINE) { + putchar(' '); + } else { + putchar('\n'); + graph_show_oneline(opt->graph); + } if (opt->reflog_info) { + /* + * setup_revisions() ensures that opt->reflog_info + * and opt->graph cannot both be set, + * so we don't need to worry about printing the + * graph info here. + */ show_reflog_message(opt->reflog_info, opt->commit_format == CMIT_FMT_ONELINE, opt->date_mode); @@ -304,13 +349,30 @@ void show_log(struct rev_info *opt) if (opt->add_signoff) append_signoff(&msgbuf, opt->add_signoff); - if (opt->show_log_size) + if (opt->show_log_size) { printf("log size %i\n", (int)msgbuf.len); + graph_show_oneline(opt->graph); + } - if (msgbuf.len) + /* + * Set opt->missing_newline if msgbuf doesn't + * end in a newline (including if it is empty) + */ + if (!msgbuf.len || msgbuf.buf[msgbuf.len - 1] != '\n') + opt->missing_newline = 1; + else + opt->missing_newline = 0; + + if (opt->graph) + graph_show_commit_msg(opt->graph, &msgbuf); + else fwrite(msgbuf.buf, sizeof(char), msgbuf.len, stdout); - if (opt->use_terminator) + if (opt->use_terminator) { + if (!opt->missing_newline) + graph_show_padding(opt->graph); putchar('\n'); + } + strbuf_release(&msgbuf); } diff --git a/revision.c b/revision.c index a813304..c947e0f 100644 --- a/revision.c +++ b/revision.c @@ -6,6 +6,7 @@ #include "diff.h" #include "refs.h" #include "revision.h" +#include "graph.h" #include "grep.h" #include "reflog-walk.h" #include "patch-ids.h" @@ -1203,6 +1204,12 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch get_commit_format(arg+8, revs); continue; } + if (!prefixcmp(arg, "--graph")) { + revs->topo_order = 1; + revs->rewrite_parents = 1; + revs->graph = graph_init(); + continue; + } if (!strcmp(arg, "--root")) { revs->show_root_diff = 1; continue; @@ -1397,6 +1404,15 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch if (revs->reverse && revs->reflog_info) die("cannot combine --reverse with --walk-reflogs"); + /* + * Limitations on the graph functionality + */ + if (revs->reverse && revs->graph) + die("cannot combine --reverse with --graph"); + + if (revs->reflog_info && revs->graph) + die("cannot combine --walk-reflogs with --graph"); + return left; } @@ -1598,7 +1614,7 @@ static void gc_boundary(struct object_array *array) } } -struct commit *get_revision(struct rev_info *revs) +static struct commit *get_revision_internal(struct rev_info *revs) { struct commit *c = NULL; struct commit_list *l; @@ -1705,3 +1721,11 @@ struct commit *get_revision(struct rev_info *revs) return c; } + +struct commit *get_revision(struct rev_info *revs) +{ + struct commit *c = get_revision_internal(revs); + if (c && revs->graph) + graph_update(revs->graph, c); + return c; +} diff --git a/revision.h b/revision.h index 201bd97..abce500 100644 --- a/revision.h +++ b/revision.h @@ -66,7 +66,8 @@ struct rev_info { /* Format info */ unsigned int shown_one:1, abbrev_commit:1, - use_terminator:1; + use_terminator:1, + missing_newline:1; enum date_mode date_mode; const char **ignore_packed; /* pretend objects in these are unpacked */ @@ -89,6 +90,9 @@ struct rev_info { /* Filter by commit log message */ struct grep_opt *grep_filter; + /* Display history graph */ + struct git_graph *graph; + /* special limits */ int skip_count; int max_count;
-- 1.5.5.1.128.gc15ea