8000 Add example program to emulate 'git log' and create pathspec matching API by arrbee · Pull Request #1711 · libgit2/libgit2 · GitHub
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Add example program to emulate 'git log' and create pathspec matching API #1711

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Add example program to emulate 'git log' and create pathspec matching API #1711

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921254d
Basic framework for log command
arrbee Jun 24, 2013
f8569d3
Add public API for pathspec matching
arrbee Jun 25, 2013
90d4f6e
Extending log example code
arrbee Jun 25, 2013
49e6937
More progress on log example
arrbee Jun 25, 2013
0d2ee74
rev-parse example
arrbee Jun 25, 2013
270cb34
Add raw header access to commit API
arrbee Jul 1, 2013
f46e22c
Add basic commit formatting to log output
arrbee Jul 1, 2013
205a6fd
Fix example/log.c minor diffs with git log
arrbee Jul 3, 2013
469bbf8
8000 fix bug with order args and no revision
arrbee Jul 3, 2013
3a70c08
more examples/log.c bug fixing
arrbee Jul 3, 2013
5e81670
Fix example/log.c pathspec handling of merges
arrbee Jul 4, 2013
8248c1a
Add a bunch more features to log example
arrbee Jul 5, 2013
5865a7a
Convert commit->parent_ids to git_array_t
arrbee Jul 8, 2013
02570c6
Improve include/git2/pathspec.h docs
arrbee Jul 8, 2013
ba5ec24
Basic bit vector
arrbee Jul 9, 2013
17111de
Add git_pathspec_match_diff API
arrbee Jul 9, 2013
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rev-parse example
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@arrbee
arrbee committed Jul 3, 2013
commit 0d2ee748aa18d5226da1a443cf8069db55c0691a
2 changes: 1 addition & 1 deletion examples/Makefile
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Expand Up @@ -3,7 +3,7 @@
CC = gcc
CFLAGS = -g -I../include -I../src -Wall -Wextra -Wmissing-prototypes -Wno-missing-field-initializers
LFLAGS = -L../build -lgit2 -lz
APPS = general showindex diff rev-list cat-file status log
APPS = general showindex diff rev-list cat-file status log rev-parse

all: $(APPS)

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106 changes: 106 additions & 0 deletions examples/rev-parse.c
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Original file line number Diff line number Diff line change
@@ -0,0 +1,106 @@
#include <stdio.h>
#include <git2.h>
#include <stdlib.h>
#include <string.h>

static void check(int error, const char *message, const char *arg)
{
if (!error)
return;
if (arg)
fprintf(stderr, "%s %s (%d)\n", message, arg, error);
else
fprintf(stderr, "%s(%d)\n", message, error);
exit(1);
}

static void usage(const char *message, const char *arg)
{
if (message && arg)
fprintf(stderr, "%s: %s\n", message, arg);
else if (message)
fprintf(stderr, "%s\n", message);
fprintf(stderr, "usage: rev-parse [ --option ] <args>...\n");
exit(1);
}

struct parse_state {
git_repository *repo;
const char *repodir;
int not;
};

static int parse_revision(struct parse_state *ps, const char *revstr)
{
git_revspec rs;
char str[GIT_OID_HEXSZ + 1];

if (!ps->repo) {
if (!ps->repodir)
ps->repodir = ".";
check(git_repository_open_ext(&ps->repo, ps->repodir, 0, NULL),
"Could not open repository from", ps->repodir);
}

check(git_revparse(&rs, ps->repo, revstr), "Could not parse", revstr);

if ((rs.flags & GIT_REVPARSE_SINGLE) != 0) {
git_oid_tostr(str, sizeof(str), git_object_id(rs.from));
printf("%s\n", str);
git_object_free(rs.from);
}
else if ((rs.flags & GIT_REVPARSE_RANGE) != 0) {
git_oid_tostr(str, sizeof(str), git_object_id(rs.to));
printf("%s\n", str);
git_object_free(rs.to);

if ((rs.flags & GIT_REVPARSE_MERGE_BASE) != 0) {
git_oid base;
check(git_merge_base(&base, ps->repo,
git_object_id(rs.from), git_object_id(rs.to)),
"Could not find merge base", revstr);

git_oid_tostr(str, sizeof(str), &base);
printf("%s\n", str);
}

git_oid_tostr(str, sizeof(str), git_object_id(rs.from));
printf("^%s\n", str);
git_object_free(rs.from);
}
else {
check(0, "Invalid results from git_revparse", revstr);
}

return 0;
}

int main(int argc, char *argv[])
{
int i;
char *a;
struct parse_state ps;

git_threads_init();

memset(&ps, 0, sizeof(ps));

for (i = 1; i < argc; ++i) {
a = argv[i];

if (a[0] != '-') {
if (parse_revision(&ps, a) != 0)
break;
} else if (!strcmp(a, "--not"))
ps.not = !ps.not;
else if (!strncmp(a, "--git-dir=", strlen("--git-dir=")))
ps.repodir = a + strlen("--git-dir=");
else
usage("Cannot handle argument", a);
}

git_repository_free(ps.repo);
git_threads_shutdown();

return 0;
}
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