Make xdi_diff_outf interface for running xdiff_outf diffs

To prepare for the need to initialize and release resources for an
xdi_diff with the xdiff_outf output function, make a new function to
wrap this usage.

Old:

	ecb.outf = xdiff_outf;
	ecb.priv = &state;
	...
	xdi_diff(file_p, file_o, &xpp, &xecfg, &ecb);

New:

	xdi_diff_outf(file_p, file_o, &state.xm, &xpp, &xecfg, &ecb);

Signed-off-by: Brian Downing <bdowning@lavos.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-blame.c b/builtin-blame.c
index 4ea343189fdad035318e94ce0c6c2ec16b62ba7f..8cca3b16d2ffbadb3f34c4bd80a04121f622abd3 100644 (file)
--- a/builtin-blame.c
+++ b/builtin-blame.c
@@ -528,15 +528,13 @@ static struct patch *compare_buffer(mmfile_t *file_p, mmfile_t *file_o,
        xpp.flags = xdl_opts;
        memset(&xecfg, 0, sizeof(xecfg));
        xecfg.ctxlen = context;
-       ecb.outf = xdiff_outf;
-       ecb.priv = &state;
        memset(&state, 0, sizeof(state));
        state.xm.consume = process_u_diff;
        state.ret = xmalloc(sizeof(struct patch));
        state.ret->chunks = NULL;
        state.ret->num = 0;
 
-       xdi_diff(file_p, file_o, &xpp, &xecfg, &ecb);
+       xdi_diff_outf(file_p, file_o, &state.xm, &xpp, &xecfg, &ecb);
 
        if (state.ret->num) {
                struct chunk *chunk;

diff --git a/combine-diff.c b/combine-diff.c
index 9f80a1c5e3a461afd11966625589684d61187911..72dd6d22340ddd2b5f3d9c7887911a16334848bd 100644 (file)
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -217,8 +217,6 @@ static void combine_diff(const unsigned char *parent, mmfile_t *result_file,
        parent_file.size = sz;
        xpp.flags = XDF_NEED_MINIMAL;
        memset(&xecfg, 0, sizeof(xecfg));
-       ecb.outf = xdiff_outf;
-       ecb.priv = &state;
        memset(&state, 0, sizeof(state));
        state.xm.consume = consume_line;
        state.nmask = nmask;
@@ -227,7 +225,8 @@ static void combine_diff(const unsigned char *parent, mmfile_t *result_file,
        state.num_parent = num_parent;
        state.n = n;
 
-       xdi_diff(&parent_file, result_file, &xpp, &xecfg, &ecb);
+       xdi_diff_outf(&parent_file, result_file,
+                     &state.xm, &xpp, &xecfg, &ecb);
        free(parent_file.ptr);
 
        /* Assign line numbers for this parent.

diff --git a/diff.c b/diff.c
index bf5d5f15a3b54f1e1a0a2068990e899fd869d435..913a92f3e92cb489dc58c688a9e14d6a4ff9f895 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -459,10 +459,8 @@ static void diff_words_show(struct diff_words_data *diff_words)
 
        xpp.flags = XDF_NEED_MINIMAL;
        xecfg.ctxlen = diff_words->minus.alloc + diff_words->plus.alloc;
-       ecb.outf = xdiff_outf;
-       ecb.priv = diff_words;
        diff_words->xm.consume = fn_out_diff_words_aux;
-       xdi_diff(&minus, &plus, &xpp, &xecfg, &ecb);
+       xdi_diff_outf(&minus, &plus, &diff_words->xm, &xpp, &xecfg, &ecb);
 
        free(minus.ptr);
        free(plus.ptr);
@@ -1521,15 +1519,13 @@ static void builtin_diff(const char *name_a,
                        xecfg.ctxlen = strtoul(diffopts + 10, NULL, 10);
                else if (!prefixcmp(diffopts, "-u"))
                        xecfg.ctxlen = strtoul(diffopts + 2, NULL, 10);
-               ecb.outf = xdiff_outf;
-               ecb.priv = &ecbdata;
                ecbdata.xm.consume = fn_out_consume;
                if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS)) {
                        ecbdata.diff_words =
                                xcalloc(1, sizeof(struct diff_words_data));
                        ecbdata.diff_words->file = o->file;
                }
-               xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
+               xdi_diff_outf(&mf1, &mf2, &ecbdata.xm, &xpp, &xecfg, &ecb);
                if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS))
                        free_diff_words_data(&ecbdata);
        }
@@ -1580,9 +1576,7 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
 
                memset(&xecfg, 0, sizeof(xecfg));
                xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
-               ecb.outf = xdiff_outf;
-               ecb.priv = diffstat;
-               xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
+               xdi_diff_outf(&mf1, &mf2, &diffstat->xm, &xpp, &xecfg, &ecb);
        }
 
  free_and_return:
@@ -1628,9 +1622,7 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
 
                memset(&xecfg, 0, sizeof(xecfg));
                xpp.flags = XDF_NEED_MINIMAL;
-               ecb.outf = xdiff_outf;
-               ecb.priv = &data;
-               xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
+               xdi_diff_outf(&mf1, &mf2, &data.xm, &xpp, &xecfg, &ecb);
 
                if ((data.ws_rule & WS_TRAILING_SPACE) &&
                    data.trailing_blanks_start) {
@@ -3128,9 +3120,7 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1)
                xpp.flags = XDF_NEED_MINIMAL;
                xecfg.ctxlen = 3;
                xecfg.flags = XDL_EMIT_FUNCNAMES;
-               ecb.outf = xdiff_outf;
-               ecb.priv = &data;
-               xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
+               xdi_diff_outf(&mf1, &mf2, &data.xm, &xpp, &xecfg, &ecb);
        }
 
        SHA1_Final(sha1, &ctx);

diff --git a/xdiff-interface.c b/xdiff-interface.c
index 61dc5c547019776b971dc89d009f628bbac134fd..828b4966a9d1e692ec7a8225406c78fca15bb5d0 100644 (file)
--- a/xdiff-interface.c
+++ b/xdiff-interface.c
@@ -61,7 +61,7 @@ static void consume_one(void *priv_, char *s, unsigned long 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;
@@ -141,6 +141,17 @@ 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,
+                 struct xdiff_emit_state *state, xpparam_t const *xpp,
+                 xdemitconf_t const *xecfg, xdemitcb_t *xecb)
+{
+       int ret;
+       xecb->outf = xdiff_outf;
+       xecb->priv = state;
+       ret = xdi_diff(mf1, mf2, xpp, xecfg, xecb);
+       return ret;
+}
+
 int read_mmfile(mmfile_t *ptr, const char *filename)
 {
        struct stat st;

diff --git a/xdiff-interface.h b/xdiff-interface.h
index f7f791d96b9a34ef0f08db4b007c5309b9adc3d6..6f3b361a845f0f71ece8188e00a3cfa12138edd4 100644 (file)
--- a/xdiff-interface.h
+++ b/xdiff-interface.h
@@ -14,7 +14,9 @@ struct xdiff_emit_state {
 };
 
 int xdi_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp, xdemitconf_t const *xecfg, xdemitcb_t *ecb);
-int xdiff_outf(void *priv_, mmbuffer_t *mb, int nbuf);
+int xdi_diff_outf(mmfile_t *mf1, mmfile_t *mf2,
+                 struct xdiff_emit_state *state, xpparam_t const *xpp,
+                 xdemitconf_t const *xecfg, xdemitcb_t *xecb);
 int parse_hunk_header(char *line, int len,
                      int *ob, int *on,
                      int *nb, int *nn);