git log [diff-tree options]...

[git.git] / combine-diff.c

diff --git a/combine-diff.c b/combine-diff.c
index 11f5143..eb0d757 100644 (file)
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -4,7 +4,7 @@
 #include "diff.h"
 #include "diffcore.h"
 #include "quote.h"
-#include "xdiff/xdiff.h"
+#include "xdiff-interface.h"
 
 static int uninteresting(struct diff_filepair *p)
 {
@@ -111,52 +111,6 @@ static char *grab_blob(const unsigned char *sha1, unsigned long *size)
        return blob;
 }
 
-static int parse_num(char **cp_p, unsigned int *num_p)
-{
-       char *cp = *cp_p;
-       unsigned int num = 0;
-       int read_some;
-
-       while ('0' <= *cp && *cp <= '9')
-               num = num * 10 + *cp++ - '0';
-       if (!(read_some = cp - *cp_p))
-               return -1;
-       *cp_p = cp;
-       *num_p = num;
-       return 0;
-}
-
-static int parse_hunk_header(char *line, int len,
-                            unsigned int *ob, unsigned int *on,
-                            unsigned int *nb, unsigned int *nn)
-{
-       char *cp;
-       cp = line + 4;
-       if (parse_num(&cp, ob)) {
-       bad_line:
-               return error("malformed diff output: %s", line);
-       }
-       if (*cp == ',') {
-               cp++;
-               if (parse_num(&cp, on))
-                       goto bad_line;
-       }
-       else
-               *on = 1;
-       if (*cp++ != ' ' || *cp++ != '+')
-               goto bad_line;
-       if (parse_num(&cp, nb))
-               goto bad_line;
-       if (*cp == ',') {
-               cp++;
-               if (parse_num(&cp, nn))
-                       goto bad_line;
-       }
-       else
-               *nn = 1;
-       return -!!memcmp(cp, " @@", 3);
-}
-
 static void append_lost(struct sline *sline, int n, const char *line, int len)
 {
        struct lline *lline;
@@ -195,9 +149,10 @@ static void append_lost(struct sline *sline, int n, const char *line, int len)
 }
 
 struct combine_diff_state {
-       char *remainder;
-       unsigned long remainder_size;
-       unsigned int lno, ob, on, nb, nn;
+       struct xdiff_emit_state xm;
+
+       unsigned int lno;
+       int ob, on, nb, nn;
        unsigned long nmask;
        int num_parent;
        int n;
@@ -205,10 +160,9 @@ struct combine_diff_state {
        struct sline *lost_bucket;
 };
 
-static void consume_line(struct combine_diff_state *state,
-                        char *line,
-                        unsigned long len)
+static void consume_line(void *state_, char *line, unsigned long len)
 {
+       struct combine_diff_state *state = state_;
        if (5 < len && !memcmp("@@ -", line, 4)) {
                if (parse_hunk_header(line, len,
                                      &state->ob, &state->on,
@@ -249,41 +203,6 @@ static void consume_line(struct combine_diff_state *state,
        }
 }
 
-static int combine_diff_outf(void *priv_, mmbuffer_t *mb, int nbuf)
-{
-       struct combine_diff_state *priv = priv_;
-       int i;
-       for (i = 0; i < nbuf; i++) {
-               if (mb[i].ptr[mb[i].size-1] != '\n') {
-                       /* Incomplete line */
-                       priv->remainder = realloc(priv->remainder,
-                                                 priv->remainder_size +
-                                                 mb[i].size);
-                       memcpy(priv->remainder + priv->remainder_size,
-                              mb[i].ptr, mb[i].size);
-                       priv->remainder_size += mb[i].size;
-                       continue;
-               }
-
-               /* we have a complete line */
-               if (!priv->remainder) {
-                       consume_line(priv, mb[i].ptr, mb[i].size);
-                       continue;
-               }
-               priv->remainder = realloc(priv->remainder,
-                                         priv->remainder_size +
-                                         mb[i].size);
-               memcpy(priv->remainder + priv->remainder_size,
-                      mb[i].ptr, mb[i].size);
-               consume_line(priv, priv->remainder,
-                            priv->remainder_size + mb[i].size);
-               free(priv->remainder);
-               priv->remainder = NULL;
-               priv->remainder_size = 0;
-       }
-       return 0;
-}
-
 static void combine_diff(const unsigned char *parent, mmfile_t *result_file,
                         struct sline *sline, int cnt, int n, int num_parent)
 {
@@ -304,9 +223,10 @@ static void combine_diff(const unsigned char *parent, mmfile_t *result_file,
        xpp.flags = XDF_NEED_MINIMAL;
        xecfg.ctxlen = 0;
        xecfg.flags = 0;
-       ecb.outf = combine_diff_outf;
+       ecb.outf = xdiff_outf;
        ecb.priv = &state;
        memset(&state, 0, sizeof(state));
+       state.xm.consume = consume_line;
        state.nmask = nmask;
        state.sline = sline;
        state.lno = 1;
@@ -314,9 +234,6 @@ static void combine_diff(const unsigned char *parent, mmfile_t *result_file,
        state.n = n;
 
        xdl_diff(&parent_file, result_file, &xpp, &xecfg, &ecb);
-       if (state.remainder && state.remainder_size)
-               consume_line(&state, state.remainder, state.remainder_size);
-       free(state.remainder);
        free(parent_file.ptr);
 
        /* Assign line numbers for this parent.