tests: unset COLUMNS inherited from environment

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

diff --git a/test-line-buffer.c b/test-line-buffer.c
index c11bf7f96708c90c992423fc27b2eba73d0c34a0..7ec9b13c9b2ceb84fb6dd0dd229e9f6cb8c1a635 100644 (file)
--- a/test-line-buffer.c
+++ b/test-line-buffer.c
@@ -1,14 +1,9 @@
 /*
  * 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"
+#include "strbuf.h"
 #include "vcs-svn/line_buffer.h"
 
 static uint32_t strtouint32(const char *s)
@@ -20,27 +15,78 @@ 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 'b':
+               if (!prefixcmp(command, "binary ")) {
+                       struct strbuf sb = STRBUF_INIT;
+                       strbuf_addch(&sb, '>');
+                       buffer_read_binary(buf, &sb, strtouint32(arg));
+                       fwrite(sb.buf, 1, sb.len, stdout);
+                       strbuf_release(&sb);
+                       return;
+               }
+       case 'c':
+               if (!prefixcmp(command, "copy ")) {
+                       buffer_copy_bytes(buf, strtouint32(arg));
+                       return;
+               }
+       case 's':
+               if (!prefixcmp(command, "skip ")) {
+                       buffer_skip_bytes(buf, strtouint32(arg));
+                       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 stdin_buf = LINE_BUFFER_INIT;
+       struct line_buffer file_buf = LINE_BUFFER_INIT;
+       struct line_buffer *input = &stdin_buf;
+       const char *filename;
        char *s;
 
-       if (argc != 1)
-               usage("test-line-buffer < input.txt");
-       if (buffer_init(NULL))
+       if (argc == 1)
+               filename = NULL;
+       else if (argc == 2)
+               filename = argv[1];
+       else
+               usage("test-line-buffer [file | &fd] < script");
+
+       if (buffer_init(&stdin_buf, NULL))
                die_errno("open error");
-       while ((s = buffer_read_line())) {
-               s = buffer_read_string(strtouint32(s));
-               fputs(s, stdout);
-               fputc('\n', stdout);
-               buffer_skip_bytes(1);
-               if (!(s = buffer_read_line()))
-                       break;
-               buffer_copy_bytes(strtouint32(s) + 1);
+       if (filename) {
+               if (*filename == '&') {
+                       if (buffer_fdinit(&file_buf, strtouint32(filename + 1)))
+                               die_errno("error opening fd %s", filename + 1);
+               } else {
+                       if (buffer_init(&file_buf, filename))
+                               die_errno("error opening %s", filename);
+               }
+               input = &file_buf;
        }
-       if (buffer_deinit())
+
+       while ((s = buffer_read_line(&stdin_buf)))
+               handle_line(s, input);
+
+       if (filename && buffer_deinit(&file_buf))
+               die("error reading from %s", filename);
+       if (buffer_deinit(&stdin_buf))
                die("input error");
        if (ferror(stdout))
                die("output error");
-       buffer_reset();
+       buffer_reset(&stdin_buf);
        return 0;
 }