convert: permit passing additional metadata to filter processes

[thirdparty/git.git] / convert.c

diff --git a/convert.c b/convert.c
index 5ead3ce678bb746fa82cef9e3b8e8ac407aa0741..6261921cfb7728e23f78bb7d340583b52300d638 100644 (file)
--- a/convert.c
+++ b/convert.c
@@ -797,6 +797,7 @@ static void handle_filter_error(const struct strbuf *filter_status,
 static int apply_multi_file_filter(const char *path, const char *src, size_t len,
                                   int fd, struct strbuf *dst, const char *cmd,
                                   const unsigned int wanted_capability,
+                                  const struct checkout_metadata *meta,
                                   struct delayed_checkout *dco)
 {
        int err;
@@ -855,6 +856,24 @@ static int apply_multi_file_filter(const char *path, const char *src, size_t len
        if (err)
                goto done;
 
+       if (meta && meta->refname) {
+               err = packet_write_fmt_gently(process->in, "ref=%s\n", meta->refname);
+               if (err)
+                       goto done;
+       }
+
+       if (meta && !is_null_oid(&meta->treeish)) {
+               err = packet_write_fmt_gently(process->in, "treeish=%s\n", oid_to_hex(&meta->treeish));
+               if (err)
+                       goto done;
+       }
+
+       if (meta && !is_null_oid(&meta->blob)) {
+               err = packet_write_fmt_gently(process->in, "blob=%s\n", oid_to_hex(&meta->blob));
+               if (err)
+                       goto done;
+       }
+
        if ((entry->supported_capabilities & CAP_DELAY) &&
            dco && dco->state == CE_CAN_DELAY) {
                can_delay = 1;
@@ -971,6 +990,7 @@ static struct convert_driver {
 static int apply_filter(const char *path, const char *src, size_t len,
                        int fd, struct strbuf *dst, struct convert_driver *drv,
                        const unsigned int wanted_capability,
+                       const struct checkout_metadata *meta,
                        struct delayed_checkout *dco)
 {
        const char *cmd = NULL;
@@ -990,7 +1010,7 @@ static int apply_filter(const char *path, const char *src, size_t len,
                return apply_single_file_filter(path, src, len, fd, dst, cmd);
        else if (drv->process && *drv->process)
                return apply_multi_file_filter(path, src, len, fd, dst,
-                       drv->process, wanted_capability, dco);
+                       drv->process, wanted_capability, meta, dco);
 
        return 0;
 }
@@ -1368,7 +1388,7 @@ int would_convert_to_git_filter_fd(const struct index_state *istate, const char
        if (!ca.drv->required)
                return 0;
 
-       return apply_filter(path, NULL, 0, -1, NULL, ca.drv, CAP_CLEAN, NULL);
+       return apply_filter(path, NULL, 0, -1, NULL, ca.drv, CAP_CLEAN, NULL, NULL);
 }
 
 const char *get_convert_attr_ascii(const struct index_state *istate, const char *path)
@@ -1406,7 +1426,7 @@ int convert_to_git(const struct index_state *istate,
 
        convert_attrs(istate, &ca, path);
 
-       ret |= apply_filter(path, src, len, -1, dst, ca.drv, CAP_CLEAN, NULL);
+       ret |= apply_filter(path, src, len, -1, dst, ca.drv, CAP_CLEAN, NULL, NULL);
        if (!ret && ca.drv && ca.drv->required)
                die(_("%s: clean filter '%s' failed"), path, ca.drv->name);
 
@@ -1441,7 +1461,7 @@ void convert_to_git_filter_fd(const struct index_state *istate,
        assert(ca.drv);
        assert(ca.drv->clean || ca.drv->process);
 
-       if (!apply_filter(path, NULL, 0, fd, dst, ca.drv, CAP_CLEAN, NULL))
+       if (!apply_filter(path, NULL, 0, fd, dst, ca.drv, CAP_CLEAN, NULL, NULL))
                die(_("%s: clean filter '%s' failed"), path, ca.drv->name);
 
        encode_to_git(path, dst->buf, dst->len, dst, ca.working_tree_encoding, conv_flags);
@@ -1452,7 +1472,9 @@ void convert_to_git_filter_fd(const struct index_state *istate,
 static int convert_to_working_tree_internal(const struct index_state *istate,
                                            const char *path, const char *src,
                                            size_t len, struct strbuf *dst,
-                                           int normalizing, struct delayed_checkout *dco)
+                                           int normalizing,
+                                           const struct checkout_metadata *meta,
+                                           struct delayed_checkout *dco)
 {
        int ret = 0, ret_filter = 0;
        struct conv_attrs ca;
@@ -1484,7 +1506,7 @@ static int convert_to_working_tree_internal(const struct index_state *istate,
        }
 
        ret_filter = apply_filter(
-               path, src, len, -1, dst, ca.drv, CAP_SMUDGE, dco);
+               path, src, len, -1, dst, ca.drv, CAP_SMUDGE, meta, dco);
        if (!ret_filter && ca.drv && ca.drv->required)
                die(_("%s: smudge filter %s failed"), path, ca.drv->name);
 
@@ -1494,22 +1516,24 @@ static int convert_to_working_tree_internal(const struct index_state *istate,
 int async_convert_to_working_tree(const struct index_state *istate,
                                  const char *path, const char *src,
                                  size_t len, struct strbuf *dst,
+                                 const struct checkout_metadata *meta,
                                  void *dco)
 {
-       return convert_to_working_tree_internal(istate, path, src, len, dst, 0, dco);
+       return convert_to_working_tree_internal(istate, path, src, len, dst, 0, meta, dco);
 }
 
 int convert_to_working_tree(const struct index_state *istate,
                            const char *path, const char *src,
-                           size_t len, struct strbuf *dst)
+                           size_t len, struct strbuf *dst,
+                           const struct checkout_metadata *meta)
 {
-       return convert_to_working_tree_internal(istate, path, src, len, dst, 0, NULL);
+       return convert_to_working_tree_internal(istate, path, src, len, dst, 0, meta, NULL);
 }
 
 int renormalize_buffer(const struct index_state *istate, const char *path,
                       const char *src, size_t len, struct strbuf *dst)
 {
-       int ret = convert_to_working_tree_internal(istate, path, src, len, dst, 1, NULL);
+       int ret = convert_to_working_tree_internal(istate, path, src, len, dst, 1, NULL, NULL);
        if (ret) {
                src = dst->buf;
                len = dst->len;