diff options
Diffstat (limited to 'apply.c')
| -rw-r--r-- | apply.c | 39 |
1 files changed, 27 insertions, 12 deletions
@@ -606,7 +606,7 @@ static int parse_fragment(char *line, unsigned long size, struct patch *patch, s { int added, deleted; int len = linelen(line, size), offset; - unsigned long pos[4], oldlines, newlines; + unsigned long oldlines, newlines; offset = parse_fragment_header(line, len, fragment); if (offset < 0) @@ -614,10 +614,21 @@ static int parse_fragment(char *line, unsigned long size, struct patch *patch, s oldlines = fragment->oldlines; newlines = fragment->newlines; - if (patch->is_new < 0 && (pos[0] || oldlines)) - patch->is_new = 0; - if (patch->is_delete < 0 && (pos[1] || newlines)) - patch->is_delete = 0; + if (patch->is_new < 0) { + patch->is_new = !oldlines; + if (!oldlines) + patch->old_name = NULL; + } + if (patch->is_delete < 0) { + patch->is_delete = !newlines; + if (!newlines) + patch->new_name = NULL; + } + + if (patch->is_new != !oldlines) + return error("new file depends on old contents"); + if (patch->is_delete != !newlines) + return error("deleted file still has contents"); /* Parse the thing.. */ line += len; @@ -928,6 +939,7 @@ static int apply_fragments(struct buffer_desc *desc, struct patch *patch) return error("patch failed: %s:%d", patch->old_name, frag->oldpos); frag = frag->next; } + return 0; } static int apply_data(struct patch *patch, struct stat *st) @@ -936,13 +948,16 @@ static int apply_data(struct patch *patch, struct stat *st) unsigned long size, alloc; struct buffer_desc desc; - if (!patch->old_name || !patch->fragments) - return 0; - size = st->st_size; - alloc = size + 8192; - buf = xmalloc(alloc); - if (read_old_data(st, patch->old_name, buf, alloc) != size) - return error("read of %s failed", patch->old_name); + size = 0; + alloc = 0; + buf = NULL; + if (patch->old_name) { + size = st->st_size; + alloc = size + 8192; + buf = xmalloc(alloc); + if (read_old_data(st, patch->old_name, buf, alloc) != size) + return error("read of %s failed", patch->old_name); + } desc.size = size; desc.alloc = alloc; |