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examples: implement config example

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Implement a new example that resembles git-config(1). Right now,
this example can both read and set configuration keys, only.
This commit is contained in:
Patrick Steinhardt
2019-06-27 09:18:19 +02:00
parent df54c7fb02
commit 8ee3d39afd
3 changed files with 64 additions and 0 deletions
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1
examples/common.h
View File

@@ -39,6 +39,7 @@ extern int lg2_blame(git_repository *repo, int argc, char **argv);
extern int lg2_cat_file(git_repository *repo, int argc, char **argv);
extern int lg2_checkout(git_repository *repo, int argc, char **argv);
extern int lg2_clone(git_repository *repo, int argc, char **argv);
extern int lg2_config(git_repository *repo, int argc, char **argv);
extern int lg2_describe(git_repository *repo, int argc, char **argv);
extern int lg2_diff(git_repository *repo, int argc, char **argv);
extern int lg2_fetch(git_repository *repo, int argc, char **argv);

62
examples/config.c Normal file
View File

@@ -0,0 +1,62 @@
/*
* libgit2 "config" example - shows how to use the config API
*
* Written by the libgit2 contributors
*
* To the extent possible under law, the author(s) have dedicated all copyright
* and related and neighboring rights to this software to the public domain
* worldwide. This software is distributed without any warranty.
*
* You should have received a copy of the CC0 Public Domain Dedication along
* with this software. If not, see
* <http://creativecommons.org/publicdomain/zero/1.0/>.
*/
#include "common.h"
static int config_get(git_config *cfg, const char *key)
{
git_config_entry *entry;
int error;
if ((error = git_config_get_entry(&entry, cfg, key)) < 0) {
if (error != GIT_ENOTFOUND)
printf("Unable to get configuration: %s\n", git_error_last()->message);
return 1;
}
puts(entry->value);
return 0;
}
static int config_set(git_config *cfg, const char *key, const char *value)
{
if (git_config_set_string(cfg, key, value) < 0) {
printf("Unable to set configuration: %s\n", git_error_last()->message);
return 1;
}
return 0;
}
int lg2_config(git_repository *repo, int argc, char **argv)
{
git_config *cfg;
int error;
if ((error = git_repository_config(&cfg, repo)) < 0) {
printf("Unable to obtain repository config: %s\n", git_error_last()->message);
goto out;
}
if (argc == 2) {
error = config_get(cfg, argv[1]);
} else if (argc == 3) {
error = config_set(cfg, argv[1], argv[2]);
} else {
printf("USAGE: %s config <KEY> [<VALUE>]\n", argv[0]);
error = 1;
}
out:
return error;
}

1
examples/lg2.c
View File

@@ -15,6 +15,7 @@ struct {
{ "cat-file", lg2_cat_file, 1 },
{ "checkout", lg2_checkout, 1 },
{ "clone", lg2_clone, 0 },
{ "config", lg2_config, 1 },
{ "describe", lg2_describe, 1 },
{ "diff", lg2_diff, 1 },
{ "fetch", lg2_fetch, 1 },