strbuf: add strbuf_reencode helper

diff --git a/convert.c b/convert.c
index 4534e2c2b003998a590637fc43c0549ff23f71b2..ab80b723574ff88b6c9c4a7c98c8821600f3e6bc 100644 (file)
--- a/convert.c
+++ b/convert.c
@@ -153,36 +153,13 @@ static void check_safe_crlf(const char *path, enum crlf_action crlf_action,
 
 static int has_cr_in_index(const char *path)
 {
-       int pos, len;
        unsigned long sz;
-       enum object_type type;
        void *data;
        int has_cr;
-       struct index_state *istate = &the_index;
 
-       len = strlen(path);
-       pos = index_name_pos(istate, path, len);
-       if (pos < 0) {
-               /*
-                * We might be in the middle of a merge, in which
-                * case we would read stage #2 (ours).
-                */
-               int i;
-               for (i = -pos - 1;
-                    (pos < 0 && i < istate->cache_nr &&
-                     !strcmp(istate->cache[i]->name, path));
-                    i++)
-                       if (ce_stage(istate->cache[i]) == 2)
-                               pos = i;
-       }
-       if (pos < 0)
-               return 0;
-       data = read_sha1_file(istate->cache[pos]->sha1, &type, &sz);
-       if (!data || type != OBJ_BLOB) {
-               free(data);
+       data = read_blob_data_from_cache(path, &sz);
+       if (!data)
                return 0;
-       }
-
        has_cr = memchr(data, '\r', sz) != NULL;
        free(data);
        return has_cr;
@@ -452,11 +429,12 @@ static struct convert_driver {
        struct convert_driver *next;
        const char *smudge;
        const char *clean;
+       int required;
 } *user_convert, **user_convert_tail;
 
 static int read_convert_config(const char *var, const char *value, void *cb)
 {
-       const char *ep, *name;
+       const char *key, *name;
        int namelen;
        struct convert_driver *drv;
 
@@ -464,10 +442,8 @@ static int read_convert_config(const char *var, const char *value, void *cb)
         * External conversion drivers are configured using
         * "filter.<name>.variable".
         */
-       if (prefixcmp(var, "filter.") || (ep = strrchr(var, '.')) == var + 6)
+       if (parse_config_key(var, "filter", &name, &namelen, &key) < 0 || !name)
                return 0;
-       name = var + 7;
-       namelen = ep - name;
        for (drv = user_convert; drv; drv = drv->next)
                if (!strncmp(drv->name, name, namelen) && !drv->name[namelen])
                        break;
@@ -478,8 +454,6 @@ static int read_convert_config(const char *var, const char *value, void *cb)
                user_convert_tail = &(drv->next);
        }
 
-       ep++;
-
        /*
         * filter.<name>.smudge and filter.<name>.clean specifies
         * the command line:
@@ -489,12 +463,17 @@ static int read_convert_config(const char *var, const char *value, void *cb)
         * The command-line will not be interpolated in any way.
         */
 
-       if (!strcmp("smudge", ep))
+       if (!strcmp("smudge", key))
                return git_config_string(&drv->smudge, var, value);
 
-       if (!strcmp("clean", ep))
+       if (!strcmp("clean", key))
                return git_config_string(&drv->clean, var, value);
 
+       if (!strcmp("required", key)) {
+               drv->required = git_config_bool(var, value);
+               return 0;
+       }
+
        return 0;
 }
 
@@ -773,13 +752,19 @@ int convert_to_git(const char *path, const char *src, size_t len,
 {
        int ret = 0;
        const char *filter = NULL;
+       int required = 0;
        struct conv_attrs ca;
 
        convert_attrs(&ca, path);
-       if (ca.drv)
+       if (ca.drv) {
                filter = ca.drv->clean;
+               required = ca.drv->required;
+       }
 
        ret |= apply_filter(path, src, len, dst, filter);
+       if (!ret && required)
+               die("%s: clean filter '%s' failed", path, ca.drv->name);
+
        if (ret && dst) {
                src = dst->buf;
                len = dst->len;
@@ -797,13 +782,16 @@ static int convert_to_working_tree_internal(const char *path, const char *src,
                                            size_t len, struct strbuf *dst,
                                            int normalizing)
 {
-       int ret = 0;
+       int ret = 0, ret_filter = 0;
        const char *filter = NULL;
+       int required = 0;
        struct conv_attrs ca;
 
        convert_attrs(&ca, path);
-       if (ca.drv)
+       if (ca.drv) {
                filter = ca.drv->smudge;
+               required = ca.drv->required;
+       }
 
        ret |= ident_to_worktree(path, src, len, dst, ca.ident);
        if (ret) {
@@ -822,7 +810,12 @@ static int convert_to_working_tree_internal(const char *path, const char *src,
                        len = dst->len;
                }
        }
-       return ret | apply_filter(path, src, len, dst, filter);
+
+       ret_filter = apply_filter(path, src, len, dst, filter);
+       if (!ret_filter && required)
+               die("%s: smudge filter %s failed", path, ca.drv->name);
+
+       return ret | ret_filter;
 }
 
 int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst)
@@ -842,7 +835,7 @@ int renormalize_buffer(const char *path, const char *src, size_t len, struct str
 
 /*****************************************************************
  *
- * Streaming converison support
+ * Streaming conversion support
  *
  *****************************************************************/
 
@@ -1128,7 +1121,7 @@ static int is_foreign_ident(const char *str)
 {
        int i;
 
-       if (prefixcmp(str, "$Id: "))
+       if (!starts_with(str, "$Id: "))
                return 0;
        for (i = 5; str[i]; i++) {
                if (isspace(str[i]) && str[i+1] != '$')