vcs-svn: make test-line-buffer input format more flexible

[git.git] / test-line-buffer.c

diff --git a/test-line-buffer.c b/test-line-buffer.c
index f9af892d28efce4dbbf5aef812917c380a672b17..383f35bba6422e29099745f7e9c1f5d2b35e5cc7 100644 (file)
--- a/test-line-buffer.c
+++ b/test-line-buffer.c
@@ -1,11 +1,5 @@
 /*
  * test-line-buffer.c: code to exercise the svn importer's input helper
- *
- * Input format:
- *     number NL
- *     (number bytes) NL
- *     number NL
- *     ...
  */
 
 #include "git-compat-util.h"
@@ -20,28 +14,50 @@ static uint32_t strtouint32(const char *s)
        return (uint32_t) n;
 }
 
+static void handle_command(const char *command, const char *arg, struct line_buffer *buf)
+{
+       switch (*command) {
+       case 'c':
+               if (!prefixcmp(command, "copy ")) {
+                       buffer_copy_bytes(buf, strtouint32(arg) + 1);
+                       return;
+               }
+       case 'r':
+               if (!prefixcmp(command, "read ")) {
+                       const char *s = buffer_read_string(buf, strtouint32(arg));
+                       printf("%s\n", s);
+                       buffer_skip_bytes(buf, 1);      /* consume newline */
+                       return;
+               }
+       default:
+               die("unrecognized command: %s", command);
+       }
+}
+
+static void handle_line(const char *line, struct line_buffer *stdin_buf)
+{
+       const char *arg = strchr(line, ' ');
+       if (!arg)
+               die("no argument in line: %s", line);
+       handle_command(line, arg + 1, stdin_buf);
+}
+
 int main(int argc, char *argv[])
 {
-       struct line_buffer buf = LINE_BUFFER_INIT;
+       struct line_buffer stdin_buf = LINE_BUFFER_INIT;
        char *s;
 
        if (argc != 1)
-               usage("test-line-buffer < input.txt");
-       if (buffer_init(&buf, NULL))
+               usage("test-line-buffer < script");
+
+       if (buffer_init(&stdin_buf, NULL))
                die_errno("open error");
-       while ((s = buffer_read_line(&buf))) {
-               s = buffer_read_string(&buf, strtouint32(s));
-               fputs(s, stdout);
-               fputc('\n', stdout);
-               buffer_skip_bytes(&buf, 1);
-               if (!(s = buffer_read_line(&buf)))
-                       break;
-               buffer_copy_bytes(&buf, strtouint32(s) + 1);
-       }
-       if (buffer_deinit(&buf))
+       while ((s = buffer_read_line(&stdin_buf)))
+               handle_line(s, &stdin_buf);
+       if (buffer_deinit(&stdin_buf))
                die("input error");
        if (ferror(stdout))
                die("output error");
-       buffer_reset(&buf);
+       buffer_reset(&stdin_buf);
        return 0;
 }