From b5a2d5d8ef83c45399fe912555147beaf10631ea Mon Sep 17 00:00:00 2001
From: Werner Almesberger <werner@openmoko.org>
Date: Thu, 23 Sep 2010 07:22:05 -0300
Subject: [PATCH] Files can now be specified as HTTP/HTTPS URLs.

- solidify/face.c (read_face): moved code into new function read_file
- solidify/face.c (read_face): added wrapper for cached wget of http: and
  https: URLs
---
 solidify/face.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 51 insertions(+), 1 deletion(-)

diff --git a/solidify/face.c b/solidify/face.c
index 8193005..20a2e01 100644
--- a/solidify/face.c
+++ b/solidify/face.c
@@ -1,7 +1,10 @@
 #include <stdlib.h>
 #include <stdio.h>
+#include <unistd.h>
 #include <string.h>
 #include <math.h>
+#include <fcntl.h>
+#include <sys/wait.h>
 
 #include "util.h"
 #include "array.h"
@@ -9,7 +12,10 @@
 #include "face.h"
 
 
-struct face *read_face(const char *name)
+#define	CACHE_DIR	".cache"
+
+
+static struct face *read_file(const char *name)
 {
 	FILE *file;
 	struct face *f;
@@ -68,3 +74,47 @@ struct face *read_face(const char *name)
 }
 
 
+struct face *read_face(const char *name)
+{
+	const char *p;
+	int cwd;
+	struct face *face;
+
+	if (strncmp(name, "http:", 5) && strncmp(name, "https:", 6))
+		return read_file(name);
+	p = strrchr(name, '/');
+	if (!p || !p[1]) {
+		fprintf(stderr, "malformed URL: \"%s\"\n", name);
+		exit(1);
+	}
+	cwd = open(".", O_RDONLY);
+	if (cwd < 0) {
+		perror(".");
+		exit(1);
+	}
+	if (chdir(CACHE_DIR) < 0) {
+		perror(CACHE_DIR);
+		exit(1);
+	}
+	if (access(p+1, R_OK) < 0) {
+		char tmp[1000]; /* @@@ enough */
+		int res;
+
+		sprintf(tmp, "wget '%s'", name);
+		res = system(tmp);
+		if (res < 0) {
+			perror("system");
+			exit(1);
+		}
+		if (!WIFEXITED(res) || WEXITSTATUS(res)) {
+			fprintf(stderr, "%s: status %d\n", tmp, res);
+			exit(1);
+		}
+	}
+	face = read_file(p+1);
+	if (fchdir(cwd) < 0) {
+		perror("fchdir");
+		exit(1);
+	}
+	return face;
+}