vcs-svn: implement copyfrom_data delta instruction

diff --git a/convert.c b/convert.c
index 01de9a84c21b31a0120065a32a386f27321cdf7b..d5aebed48df3387e966a23b6ee460dc2244f728e 100644 (file)
--- a/convert.c
+++ b/convert.c
@@ -1,6 +1,7 @@
 #include "cache.h"
 #include "attr.h"
 #include "run-command.h"
+#include "quote.h"
 
 /*
  * convert.c - convert a file when checking it out and checking it in.
@@ -318,6 +319,7 @@ struct filter_params {
        const char *src;
        unsigned long size;
        const char *cmd;
+       const char *path;
 };
 
 static int filter_buffer(int in, int out, void *data)
@@ -330,7 +332,23 @@ static int filter_buffer(int in, int out, void *data)
        int write_err, status;
        const char *argv[] = { NULL, NULL };
 
-       argv[0] = params->cmd;
+       /* apply % substitution to cmd */
+       struct strbuf cmd = STRBUF_INIT;
+       struct strbuf path = STRBUF_INIT;
+       struct strbuf_expand_dict_entry dict[] = {
+               { "f", NULL, },
+               { NULL, NULL, },
+       };
+
+       /* quote the path to preserve spaces, etc. */
+       sq_quote_buf(&path, params->path);
+       dict[0].value = path.buf;
+
+       /* expand all %f with the quoted path */
+       strbuf_expand(&cmd, params->cmd, strbuf_expand_dict_cb, &dict);
+       strbuf_release(&path);
+
+       argv[0] = cmd.buf;
 
        memset(&child_process, 0, sizeof(child_process));
        child_process.argv = argv;
@@ -350,6 +368,8 @@ static int filter_buffer(int in, int out, void *data)
        status = finish_command(&child_process);
        if (status)
                error("external filter %s failed %d", params->cmd, status);
+
+       strbuf_release(&cmd);
        return (write_err || status);
 }
 
@@ -377,6 +397,7 @@ static int apply_filter(const char *path, const char *src, size_t len,
        params.src = src;
        params.size = len;
        params.cmd = cmd;
+       params.path = path;
 
        fflush(NULL);
        if (start_async(&async))