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-rw-r--r--xdiff-interface.c154
1 files changed, 123 insertions, 31 deletions
diff --git a/xdiff-interface.c b/xdiff-interface.c
index 3bf83f81e3..e8ef46d10d 100644
--- a/xdiff-interface.c
+++ b/xdiff-interface.c
@@ -1,5 +1,15 @@
#include "cache.h"
#include "xdiff-interface.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;
+ void *consume_callback_data;
+ struct strbuf remainder;
+};
static int parse_num(char **cp_p, int *num_p)
{
@@ -55,13 +65,13 @@ static void consume_one(void *priv_, char *s, unsigned long size)
unsigned long this_size;
ep = memchr(s, '\n', size);
this_size = (ep == NULL) ? size : (ep - s + 1);
- priv->consume(priv, s, this_size);
+ priv->consume(priv->consume_callback_data, s, this_size);
size -= this_size;
s += this_size;
}
}
-int xdiff_outf(void *priv_, mmbuffer_t *mb, int nbuf)
+static int xdiff_outf(void *priv_, mmbuffer_t *mb, int nbuf)
{
struct xdiff_emit_state *priv = priv_;
int i;
@@ -69,36 +79,22 @@ int xdiff_outf(void *priv_, mmbuffer_t *mb, int nbuf)
for (i = 0; i < nbuf; i++) {
if (mb[i].ptr[mb[i].size-1] != '\n') {
/* Incomplete line */
- priv->remainder = xrealloc(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;
+ strbuf_add(&priv->remainder, mb[i].ptr, mb[i].size);
continue;
}
/* we have a complete line */
- if (!priv->remainder) {
+ if (!priv->remainder.len) {
consume_one(priv, mb[i].ptr, mb[i].size);
continue;
}
- priv->remainder = xrealloc(priv->remainder,
- priv->remainder_size +
- mb[i].size);
- memcpy(priv->remainder + priv->remainder_size,
- mb[i].ptr, mb[i].size);
- consume_one(priv, priv->remainder,
- priv->remainder_size + mb[i].size);
- free(priv->remainder);
- priv->remainder = NULL;
- priv->remainder_size = 0;
+ strbuf_add(&priv->remainder, mb[i].ptr, mb[i].size);
+ consume_one(priv, priv->remainder.buf, priv->remainder.len);
+ strbuf_reset(&priv->remainder);
}
- if (priv->remainder) {
- consume_one(priv, priv->remainder, priv->remainder_size);
- free(priv->remainder);
- priv->remainder = NULL;
- priv->remainder_size = 0;
+ if (priv->remainder.len) {
+ consume_one(priv, priv->remainder.buf, priv->remainder.len);
+ strbuf_reset(&priv->remainder);
}
return 0;
}
@@ -141,6 +137,69 @@ int xdi_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp, xdemitconf_t co
return xdl_diff(&a, &b, xpp, xecfg, xecb);
}
+int xdi_diff_outf(mmfile_t *mf1, mmfile_t *mf2,
+ xdiff_emit_consume_fn fn, void *consume_callback_data,
+ xpparam_t const *xpp,
+ xdemitconf_t const *xecfg, xdemitcb_t *xecb)
+{
+ int ret;
+ struct xdiff_emit_state state;
+
+ memset(&state, 0, sizeof(state));
+ state.consume = fn;
+ state.consume_callback_data = consume_callback_data;
+ xecb->outf = xdiff_outf;
+ xecb->priv = &state;
+ strbuf_init(&state.remainder, 0);
+ ret = xdi_diff(mf1, mf2, xpp, xecfg, xecb);
+ strbuf_release(&state.remainder);
+ 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;
@@ -182,7 +241,18 @@ static long ff_regexp(const char *line, long len,
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 */
/* Exclude terminating newline (and cr) from matching */
if (len > 0 && line[len-1] == '\n') {
@@ -196,22 +266,24 @@ static long ff_regexp(const char *line, long len,
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;
}
@@ -247,3 +319,23 @@ void xdiff_set_find_func(xdemitconf_t *xecfg, const char *value, int cflags)
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);
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 01:19:32 +0000