restore legacy behavior for read_sha1_file()

[git.git] / exec_cmd.c

diff --git a/exec_cmd.c b/exec_cmd.c
index 6618aad7abde8b0e74186ce7742acf0e22925479..da04efe951e5b8dc4e7b72246212d8ebabc09ec6 100644 (file)
--- a/exec_cmd.c
+++ b/exec_cmd.c
@@ -8,7 +8,36 @@ static const char *argv_exec_path;
 
 static const char *builtin_exec_path(void)
 {
+#ifndef __MINGW32__
        return GIT_EXEC_PATH;
+#else
+       int len;
+       char *p, *q, *sl;
+       static char *ep;
+       if (ep)
+               return ep;
+
+       len = strlen(_pgmptr);
+       if (len < 2)
+               return ep = ".";
+
+       p = ep = xmalloc(len+1);
+       q = _pgmptr;
+       sl = NULL;
+       /* copy program name, turn '\\' into '/', skip last part */
+       while ((*p = *q)) {
+               if (*q == '\\' || *q == '/') {
+                       *p = '/';
+                       sl = p;
+               }
+               p++, q++;
+       }
+       if (sl)
+               *sl = '\0';
+       else
+               ep[0] = '.', ep[1] = '\0';
+       return ep;
+#endif
 }
 
 void git_set_argv_exec_path(const char *exec_path)
@@ -69,32 +98,25 @@ void setup_path(const char *cmd_path)
 
 int execv_git_cmd(const char **argv)
 {
-       struct strbuf cmd;
-       const char *tmp;
-
-       strbuf_init(&cmd, 0);
-       strbuf_addf(&cmd, "git-%s", argv[0]);
+       int argc;
+       const char **nargv;
 
-       /*
-        * argv[0] must be the git command, but the argv array
-        * belongs to the caller, and may be reused in
-        * subsequent loop iterations. Save argv[0] and
-        * restore it on error.
-        */
-       tmp = argv[0];
-       argv[0] = cmd.buf;
+       for (argc = 0; argv[argc]; argc++)
+               ; /* just counting */
+       nargv = xmalloc(sizeof(*nargv) * (argc + 2));
 
-       trace_argv_printf(argv, "trace: exec:");
+       nargv[0] = "git";
+       for (argc = 0; argv[argc]; argc++)
+               nargv[argc + 1] = argv[argc];
+       nargv[argc + 1] = NULL;
+       trace_argv_printf(nargv, "trace: exec:");
 
        /* execvp() can only ever return if it fails */
-       execvp(cmd.buf, (char **)argv);
+       execvp("git", (char **)nargv);
 
        trace_printf("trace: exec failed: %s\n", strerror(errno));
 
-       argv[0] = tmp;
-
-       strbuf_release(&cmd);
-
+       free(nargv);
        return -1;
 }