mirror of
https://github.com/git/git.git
synced 2024-10-30 05:47:53 +01:00
77cb17e940
The git suite may not be in PATH (and thus programs such as git-send-pack could not exec git-rev-list). Thus there is a need for logic that will locate these programs. Modifying PATH is not desirable as it result in behavior differing from the user's intentions, as we may end up prepending "/usr/bin" to PATH. - git C programs will use exec*_git_cmd() APIs to exec sub-commands. - exec*_git_cmd() will execute a git program by searching for it in the following directories: 1. --exec-path (as used by "git") 2. The GIT_EXEC_PATH environment variable. 3. $(gitexecdir) as set in Makefile (default value $(bindir)). - git wrapper will modify PATH as before to enable shell scripts to invoke "git-foo" commands. Ideally, shell scripts should use the git wrapper to become independent of PATH, and then modifying PATH will not be necessary. [jc: with minor updates after a brief review.] Signed-off-by: Michal Ostrowski <mostrows@watson.ibm.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
#include "cache.h"
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#include "quote.h"
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#include "exec_cmd.h"
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static int do_generic_cmd(const char *me, char *arg)
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{
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const char *my_argv[4];
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if (!arg || !(arg = sq_dequote(arg)))
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die("bad argument");
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if (strncmp(me, "git-", 4))
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die("bad command");
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my_argv[0] = me + 4;
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my_argv[1] = arg;
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my_argv[2] = NULL;
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return execv_git_cmd((char**) my_argv);
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}
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static struct commands {
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const char *name;
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int (*exec)(const char *me, char *arg);
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} cmd_list[] = {
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{ "git-receive-pack", do_generic_cmd },
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{ "git-upload-pack", do_generic_cmd },
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{ NULL },
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};
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int main(int argc, char **argv)
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{
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char *prog;
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struct commands *cmd;
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/* We want to see "-c cmd args", and nothing else */
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if (argc != 3 || strcmp(argv[1], "-c"))
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die("What do you think I am? A shell?");
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prog = argv[2];
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argv += 2;
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argc -= 2;
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for (cmd = cmd_list ; cmd->name ; cmd++) {
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int len = strlen(cmd->name);
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char *arg;
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if (strncmp(cmd->name, prog, len))
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continue;
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arg = NULL;
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switch (prog[len]) {
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case '\0':
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arg = NULL;
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break;
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case ' ':
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arg = prog + len + 1;
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break;
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default:
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continue;
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}
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exit(cmd->exec(cmd->name, arg));
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}
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die("unrecognized command '%s'", prog);
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}
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