strbuf_realpath(): use platform-dependent API if available

dscho · Git for Windows Build Agent · commit 5ee841fcaa98 · 2020-10-15T20:26:10.000Z
Some platforms (e.g. Windows) provide API functions to resolve paths
much quicker. Let's offer a way to short-cut `strbuf_realpath()` on
those platforms.

Signed-off-by: Johannes Schindelin &lt;johannes.schindelin@gmx.de&gt;
diff --git a/abspath.c b/abspath.c
@@ -95,6 +95,9 @@ char *strbuf_realpath(struct strbuf *resolved, const char *path,
 			goto error_out;
 	}
 
+	if (platform_strbuf_realpath(resolved, path))
+		return resolved->buf;
+
 	strbuf_addstr(&remaining, path);
 	get_root_part(resolved, &remaining);
 
diff --git a/git-compat-util.h b/git-compat-util.h
@@ -405,6 +405,10 @@ static inline int git_has_dir_sep(const char *path)
 #define query_user_email() NULL
 #endif
 
+#ifndef platform_strbuf_realpath
+#define platform_strbuf_realpath(resolved, path) NULL
+#endif
+
 #ifdef __TANDEM
 #include <floss.h(floss_execl,floss_execlp,floss_execv,floss_execvp)>
 #include <floss.h(floss_getpwuid)>

Original file line number	Diff line number	Diff line change
`@@ -95,6 +95,9 @@ char strbuf_realpath(struct strbuf resolved, const char *path,`
`95`	`95`	`goto error_out;`
`96`	`96`	`}`
`97`	`97`
	`98`	`+ if (platform_strbuf_realpath(resolved, path))`
	`99`	`+ return resolved->buf;`
	`100`	`+`
`98`	`101`	`strbuf_addstr(&remaining, path);`
`99`	`102`	`get_root_part(resolved, &remaining);`
`100`	`103`