gitweb: Update README that gitweb works better with PATH_INFO

[git.git] / xdiff-interface.c

diff --git a/xdiff-interface.c b/xdiff-interface.c
index 944ad9887f5c94ca0e63f9a6c901447634f871ce..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;
@@ -191,34 +238,47 @@ struct ff_regs {
 static long ff_regexp(const char *line, long len,
                char *buffer, long buffer_size, void *priv)
 {
-       char *line_buffer = xstrndup(line, len); /* make NUL terminated */
+       char *line_buffer;
        struct ff_regs *regs = priv;
        regmatch_t pmatch[2];
-       int result = 0, i;
+       int i;
+       int result = -1;
+
+       /* 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 (reg->negate ^ !!regexec(&reg->re,
-                                       line_buffer, 2, pmatch, 0)) {
-                       free(line_buffer);
-                       return -1;
+               if (!regexec(&reg->re, line_buffer, 2, pmatch, 0)) {
+                       if (reg->negate)
+                               goto fail;
+                       break;
                }
        }
+       if (regs->nr <= i)
+               goto fail;
        i = pmatch[1].rm_so >= 0 ? 1 : 0;
        line += pmatch[i].rm_so;
        result = pmatch[i].rm_eo - pmatch[i].rm_so;
        if (result > buffer_size)
                result = buffer_size;
        else
-               while (result > 0 && (isspace(line[result - 1]) ||
-                                       line[result - 1] == '\n'))
+               while (result > 0 && (isspace(line[result - 1])))
                        result--;
        memcpy(buffer, line, result);
+ fail:
        free(line_buffer);
        return result;
 }
 
-void xdiff_set_find_func(xdemitconf_t *xecfg, const char *value)
+void xdiff_set_find_func(xdemitconf_t *xecfg, const char *value, int cflags)
 {
        int i;
        struct ff_regs *regs;
@@ -243,9 +303,28 @@ void xdiff_set_find_func(xdemitconf_t *xecfg, const char *value)
                        expression = buffer = xstrndup(value, ep - value);
                else
                        expression = value;
-               if (regcomp(&reg->re, expression, 0))
+               if (regcomp(&reg->re, expression, cflags))
                        die("Invalid regexp to look for hunk header: %s", expression);
                free(buffer);
                value = ep + 1;
        }
 }
+
+int git_xmerge_style = -1;
+
+int git_xmerge_config(const char *var, const char *value, void *cb)
+{
+       if (!strcasecmp(var, "merge.conflictstyle")) {
+               if (!value)
+                       die("'%s' is not a boolean", var);
+               if (!strcmp(value, "diff3"))
+                       git_xmerge_style = XDL_MERGE_DIFF3;
+               else if (!strcmp(value, "merge"))
+                       git_xmerge_style = 0;
+               else
+                       die("unknown style '%s' given for '%s'",
+                           value, var);
+               return 0;
+       }
+       return git_default_config(var, value, cb);
+}