diff options
Diffstat (limited to 'libpatch_next_hunk.c')
-rw-r--r-- | libpatch_next_hunk.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/libpatch_next_hunk.c b/libpatch_next_hunk.c new file mode 100644 index 0000000..4fcb8f4 --- /dev/null +++ b/libpatch_next_hunk.c @@ -0,0 +1,31 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + + +size_t +libpatch_next_hunk(struct libpatch_diff2 *diff, size_t difflen, size_t *position, + size_t *ai, size_t *bi, size_t *an_out, size_t *bn_out, int skip_context) +{ + size_t n; + int mask = skip_context ? 0x03 : ~0; + + while (*position < difflen && !(diff[*position].change & mask)) { + *ai += (size_t)diff[*position].repetition; + *bi += (size_t)diff[*position].repetition; + *position += 1; + } + + *an_out = 0; + *bn_out = 0; + n = 0; + + while (n < difflen - *position && (diff[*position + n].change & mask)) { + if (diff[*position + n].change != LIBPATCH_DIFF2_FILE2_ONLY) + *an_out += (size_t)diff[*position + n].repetition; + if (diff[*position + n].change != LIBPATCH_DIFF2_FILE1_ONLY) + *bn_out += (size_t)diff[*position + n].repetition; + n += 1; + } + + return n; +} |