git-am: implement --reject option passed to git-apply

diff --git a/xdiff-interface.c b/xdiff-interface.c
index 49e06af710ceee5538eb10f0c6cf9c30f31748b4..d782f06d9916bdde33dc3f7312f9eac4e14ef3a1 100644 (file)
--- a/xdiff-interface.c
+++ b/xdiff-interface.c
@@ -1,6 +1,9 @@
 #include "cache.h"
 #include "xdiff-interface.h"
-#include "strbuf.h"
+#include "xdiff/xtypes.h"
+#include "xdiff/xdiffi.h"
+#include "xdiff/xemit.h"
+#include "xdiff/xmacros.h"
 
 struct xdiff_emit_state {
        xdiff_emit_consume_fn consume;
@@ -153,6 +156,50 @@ int xdi_diff_outf(mmfile_t *mf1, mmfile_t *mf2,
        return ret;
 }
 
+struct xdiff_emit_hunk_state {
+       xdiff_emit_hunk_consume_fn consume;
+       void *consume_callback_data;
+};
+
+static int process_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb,
+                       xdemitconf_t const *xecfg)
+{
+       long s1, s2, same, p_next, t_next;
+       xdchange_t *xch, *xche;
+       struct xdiff_emit_hunk_state *state = ecb->priv;
+       xdiff_emit_hunk_consume_fn fn = state->consume;
+       void *consume_callback_data = state->consume_callback_data;
+
+       for (xch = xscr; xch; xch = xche->next) {
+               xche = xdl_get_hunk(xch, xecfg);
+
+               s1 = XDL_MAX(xch->i1 - xecfg->ctxlen, 0);
+               s2 = XDL_MAX(xch->i2 - xecfg->ctxlen, 0);
+               same = s2 + XDL_MAX(xch->i1 - s1, 0);
+               p_next = xche->i1 + xche->chg1;
+               t_next = xche->i2 + xche->chg2;
+
+               fn(consume_callback_data, same, p_next, t_next);
+       }
+       return 0;
+}
+
+int xdi_diff_hunks(mmfile_t *mf1, mmfile_t *mf2,
+                  xdiff_emit_hunk_consume_fn fn, void *consume_callback_data,
+                  xpparam_t const *xpp, xdemitconf_t *xecfg)
+{
+       struct xdiff_emit_hunk_state state;
+       xdemitcb_t ecb;
+
+       memset(&state, 0, sizeof(state));
+       memset(&ecb, 0, sizeof(ecb));
+       state.consume = fn;
+       state.consume_callback_data = consume_callback_data;
+       xecfg->emit_func = (void (*)())process_diff;
+       ecb.priv = &state;
+       return xdi_diff(mf1, mf2, xpp, xecfg, &ecb);
+}
+
 int read_mmfile(mmfile_t *ptr, const char *filename)
 {
        struct stat st;
@@ -207,16 +254,6 @@ static long ff_regexp(const char *line, long len,
 
        line_buffer = xstrndup(line, len); /* make NUL terminated */
 
-       /* Exclude terminating newline (and cr) from matching */
-       if (len > 0 && line[len-1] == '\n') {
-               if (len > 1 && line[len-2] == '\r')
-                       len -= 2;
-               else
-                       len--;
-       }
-
-       line_buffer = xstrndup(line, len); /* make NUL terminated */
-
        for (i = 0; i < regs->nr; i++) {
                struct ff_reg *reg = regs->array + i;
                if (!regexec(&reg->re, line_buffer, 2, pmatch, 0)) {
@@ -291,4 +328,3 @@ int git_xmerge_config(const char *var, const char *value, void *cb)
        }
        return git_default_config(var, value, cb);
 }
-