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authorJohannes Schindelin <Johannes.Schindelin@gmx.de>2006-06-05 17:43:52 (GMT)
committerJunio C Hamano <junkio@cox.net>2006-06-06 00:49:17 (GMT)
commit2b11e3170e919866c7f5554dd4089289a1bb6726 (patch)
tree2a7b6f4609e0f39343bf1020e9c6c580e25189db /git.c
parent441c823e892ba7408e87d26b6e77def5975c1c60 (diff)
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If you have a config containing something like this:
[alias] l = "log --stat -M ORIG_HEAD.." you can call git l and it will do the same as git log --stat -M ORIG_HEAD.. Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'git.c')
-rw-r--r--git.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/git.c b/git.c
index bc463c9..8854472 100644
--- a/git.c
+++ b/git.c
@@ -10,6 +10,7 @@
#include <stdarg.h>
#include "git-compat-util.h"
#include "exec_cmd.h"
+#include "cache.h"
#include "builtin.h"
@@ -32,6 +33,113 @@ static void prepend_to_path(const char *dir, int len)
setenv("PATH", path, 1);
}
+static const char *alias_command;
+static char *alias_string = NULL;
+
+static int git_alias_config(const char *var, const char *value)
+{
+ if (!strncmp(var, "alias.", 6) && !strcmp(var + 6, alias_command)) {
+ alias_string = strdup(value);
+ }
+ return 0;
+}
+
+static int split_cmdline(char *cmdline, const char ***argv)
+{
+ int src, dst, count = 0, size = 16;
+ char quoted = 0;
+
+ *argv = malloc(sizeof(char*) * size);
+
+ /* split alias_string */
+ (*argv)[count++] = cmdline;
+ for (src = dst = 0; cmdline[src];) {
+ char c = cmdline[src];
+ if (!quoted && isspace(c)) {
+ cmdline[dst++] = 0;
+ while (cmdline[++src]
+ && isspace(cmdline[src]))
+ ; /* skip */
+ if (count >= size) {
+ size += 16;
+ *argv = realloc(*argv, sizeof(char*) * size);
+ }
+ (*argv)[count++] = cmdline + dst;
+ } else if(!quoted && (c == '\'' || c == '"')) {
+ quoted = c;
+ src++;
+ } else if (c == quoted) {
+ quoted = 0;
+ src++;
+ } else {
+ if (c == '\\' && quoted != '\'') {
+ src++;
+ c = cmdline[src];
+ if (!c) {
+ free(*argv);
+ *argv = NULL;
+ return error("cmdline ends with \\");
+ }
+ }
+ cmdline[dst++] = c;
+ src++;
+ }
+ }
+
+ cmdline[dst] = 0;
+
+ if (quoted) {
+ free(*argv);
+ *argv = NULL;
+ return error("unclosed quote");
+ }
+
+ return count;
+}
+
+static int handle_alias(int *argcp, const char ***argv)
+{
+ int nongit = 0, ret = 0;
+ const char *subdir;
+
+ subdir = setup_git_directory_gently(&nongit);
+ if (!nongit) {
+ int count;
+ const char** new_argv;
+
+ alias_command = (*argv)[0];
+ git_config(git_alias_config);
+ if (alias_string) {
+
+ count = split_cmdline(alias_string, &new_argv);
+
+ if (count < 1)
+ die("empty alias for %s", alias_command);
+
+ if (!strcmp(alias_command, new_argv[0]))
+ die("recursive alias: %s", alias_command);
+
+ /* insert after command name */
+ if (*argcp > 1) {
+ new_argv = realloc(new_argv, sizeof(char*) *
+ (count + *argcp - 1));
+ memcpy(new_argv + count, *argv, sizeof(char*) *
+ (*argcp - 1));
+ }
+
+ *argv = new_argv;
+ *argcp += count - 1;
+
+ ret = 1;
+ }
+ }
+
+ if (subdir)
+ chdir(subdir);
+
+ return ret;
+}
+
const char git_version_string[] = GIT_VERSION;
static void handle_internal_command(int argc, const char **argv, char **envp)
@@ -121,6 +229,7 @@ int main(int argc, const char **argv, char **envp)
if (!strncmp(cmd, "git-", 4)) {
cmd += 4;
argv[0] = cmd;
+ handle_alias(&argc, &argv);
handle_internal_command(argc, argv, envp);
die("cannot handle %s internally", cmd);
}
@@ -178,6 +287,8 @@ int main(int argc, const char **argv, char **envp)
exec_path = git_exec_path();
prepend_to_path(exec_path, strlen(exec_path));
+ handle_alias(&argc, &argv);
+
/* See if it's an internal command */
handle_internal_command(argc, argv, envp);