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builtin/apply: move 'apply_in_reverse' global into 'struct apply_state'

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To libify the apply functionality the 'apply_in_reverse' variable should
not be static and global to the file. Let's move it into
'struct apply_state'.

Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Christian Couder 2016-05-24 10:10:50 +02:00 committed by Junio C Hamano
parent ee87a6e740
commit 2595a8b146
1 changed files with 31 additions and 19 deletions
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50
builtin/apply.c
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@ -30,6 +30,7 @@ struct apply_state {
int check_index; /* preimage must match the indexed version */ int check_index; /* preimage must match the indexed version */
/* These boolean parameters control how the apply is done */ /* These boolean parameters control how the apply is done */
int apply_in_reverse;
int unidiff_zero; int unidiff_zero;
}; };
@ -49,7 +50,6 @@ static int diffstat;
static int numstat; static int numstat;
static int summary; static int summary;
static int apply = 1; static int apply = 1;
static int apply_in_reverse;
static int apply_with_reject; static int apply_with_reject;
static int apply_verbosely; static int apply_verbosely;
static int allow_overlap; static int allow_overlap;
@ -1556,8 +1556,11 @@ static void check_whitespace(const char *line, int len, unsigned ws_rule)
* between a "---" that is part of a patch, and a "---" that starts * between a "---" that is part of a patch, and a "---" that starts
* the next patch is to look at the line counts.. * the next patch is to look at the line counts..
*/ */
static int parse_fragment(const char *line, unsigned long size, static int parse_fragment(struct apply_state *state,
struct patch *patch, struct fragment *fragment) const char *line,
unsigned long size,
struct patch *patch,
struct fragment *fragment)
{ {
int added, deleted; int added, deleted;
int len = linelen(line, size), offset; int len = linelen(line, size), offset;
@ -1597,12 +1600,12 @@ static int parse_fragment(const char *line, unsigned long size,
if (!deleted && !added) if (!deleted && !added)
leading++; leading++;
trailing++; trailing++;
if (!apply_in_reverse && if (!state->apply_in_reverse &&
ws_error_action == correct_ws_error) ws_error_action == correct_ws_error)
check_whitespace(line, len, patch->ws_rule); check_whitespace(line, len, patch->ws_rule);
break; break;
case '-': case '-':
if (apply_in_reverse && if (state->apply_in_reverse &&
ws_error_action != nowarn_ws_error) ws_error_action != nowarn_ws_error)
check_whitespace(line, len, patch->ws_rule); check_whitespace(line, len, patch->ws_rule);
deleted++; deleted++;
@ -1610,7 +1613,7 @@ static int parse_fragment(const char *line, unsigned long size,
trailing = 0; trailing = 0;
break; break;
case '+': case '+':
if (!apply_in_reverse && if (!state->apply_in_reverse &&
ws_error_action != nowarn_ws_error) ws_error_action != nowarn_ws_error)
check_whitespace(line, len, patch->ws_rule); check_whitespace(line, len, patch->ws_rule);
added++; added++;
@ -1666,7 +1669,10 @@ static int parse_fragment(const char *line, unsigned long size,
* The (fragment->patch, fragment->size) pair points into the memory given * The (fragment->patch, fragment->size) pair points into the memory given
* by the caller, not a copy, when we return. * by the caller, not a copy, when we return.
*/ */
static int parse_single_patch(const char *line, unsigned long size, struct patch *patch) static int parse_single_patch(struct apply_state *state,
const char *line,
unsigned long size,
struct patch *patch)
{ {
unsigned long offset = 0; unsigned long offset = 0;
unsigned long oldlines = 0, newlines = 0, context = 0; unsigned long oldlines = 0, newlines = 0, context = 0;
@ -1678,7 +1684,7 @@ static int parse_single_patch(const char *line, unsigned long size, struct patch
fragment = xcalloc(1, sizeof(*fragment)); fragment = xcalloc(1, sizeof(*fragment));
fragment->linenr = state_linenr; fragment->linenr = state_linenr;
len = parse_fragment(line, size, patch, fragment); len = parse_fragment(state, line, size, patch, fragment);
if (len <= 0) if (len <= 0)
die(_("corrupt patch at line %d"), state_linenr); die(_("corrupt patch at line %d"), state_linenr);
fragment->patch = line; fragment->patch = line;
@ -2008,8 +2014,10 @@ static int parse_chunk(struct apply_state *state, char *buffer, unsigned long si
? patch->new_name ? patch->new_name
: patch->old_name); : patch->old_name);
patchsize = parse_single_patch(buffer + offset + hdrsize, patchsize = parse_single_patch(state,
size - offset - hdrsize, patch); buffer + offset + hdrsize,
size - offset - hdrsize,
patch);
if (!patchsize) { if (!patchsize) {
static const char git_binary[] = "GIT binary patch\n"; static const char git_binary[] = "GIT binary patch\n";
@ -2741,7 +2749,7 @@ static int apply_one_fragment(struct apply_state *state,
if (len < size && patch[len] == '\\') if (len < size && patch[len] == '\\')
plen--; plen--;
first = *patch; first = *patch;
if (apply_in_reverse) { if (state->apply_in_reverse) {
if (first == '-') if (first == '-')
first = '+'; first = '+';
else if (first == '+') else if (first == '+')
@ -2914,7 +2922,7 @@ static int apply_one_fragment(struct apply_state *state,
if (apply_verbosely && applied_pos != pos) { if (apply_verbosely && applied_pos != pos) {
int offset = applied_pos - pos; int offset = applied_pos - pos;
if (apply_in_reverse) if (state->apply_in_reverse)
offset = 0 - offset; offset = 0 - offset;
fprintf_ln(stderr, fprintf_ln(stderr,
Q_("Hunk #%d succeeded at %d (offset %d line).", Q_("Hunk #%d succeeded at %d (offset %d line).",
@ -2948,7 +2956,9 @@ static int apply_one_fragment(struct apply_state *state,
return (applied_pos < 0); return (applied_pos < 0);
} }
static int apply_binary_fragment(struct image *img, struct patch *patch) static int apply_binary_fragment(struct apply_state *state,
struct image *img,
struct patch *patch)
{ {
struct fragment *fragment = patch->fragments; struct fragment *fragment = patch->fragments;
unsigned long len; unsigned long len;
@ -2961,7 +2971,7 @@ static int apply_binary_fragment(struct image *img, struct patch *patch)
patch->old_name); patch->old_name);
/* Binary patch is irreversible without the optional second hunk */ /* Binary patch is irreversible without the optional second hunk */
if (apply_in_reverse) { if (state->apply_in_reverse) {
if (!fragment->next) if (!fragment->next)
return error("cannot reverse-apply a binary patch " return error("cannot reverse-apply a binary patch "
"without the reverse hunk to '%s'", "without the reverse hunk to '%s'",
@ -2994,7 +3004,9 @@ static int apply_binary_fragment(struct image *img, struct patch *patch)
* but the preimage prepared by the caller in "img" is freed here * but the preimage prepared by the caller in "img" is freed here
* or in the helper function apply_binary_fragment() this calls. * or in the helper function apply_binary_fragment() this calls.
*/ */
static int apply_binary(struct image *img, struct patch *patch) static int apply_binary(struct apply_state *state,
struct image *img,
struct patch *patch)
{ {
const char *name = patch->old_name ? patch->old_name : patch->new_name; const char *name = patch->old_name ? patch->old_name : patch->new_name;
unsigned char sha1[20]; unsigned char sha1[20];
@ -3055,7 +3067,7 @@ static int apply_binary(struct image *img, struct patch *patch)
* apply the patch data to it, which is stored * apply the patch data to it, which is stored
* in the patch->fragments->{patch,size}. * in the patch->fragments->{patch,size}.
*/ */
if (apply_binary_fragment(img, patch)) if (apply_binary_fragment(state, img, patch))
return error(_("binary patch does not apply to '%s'"), return error(_("binary patch does not apply to '%s'"),
name); name);
@ -3078,7 +3090,7 @@ static int apply_fragments(struct apply_state *state, struct image *img, struct
int nth = 0; int nth = 0;
if (patch->is_binary) if (patch->is_binary)
return apply_binary(img, patch); return apply_binary(state, img, patch);
while (frag) { while (frag) {
nth++; nth++;
@ -4417,7 +4429,7 @@ static int apply_patch(struct apply_state *state,
free_patch(patch); free_patch(patch);
break; break;
} }
if (apply_in_reverse) if (state->apply_in_reverse)
reverse_patches(patch); reverse_patches(patch);
if (use_patch(state, patch)) { if (use_patch(state, patch)) {
patch_stats(patch); patch_stats(patch);
@ -4615,7 +4627,7 @@ int cmd_apply(int argc, const char **argv, const char *prefix)
{ OPTION_CALLBACK, 0, "ignore-whitespace", NULL, NULL, { OPTION_CALLBACK, 0, "ignore-whitespace", NULL, NULL,
N_("ignore changes in whitespace when finding context"), N_("ignore changes in whitespace when finding context"),
PARSE_OPT_NOARG, option_parse_space_change }, PARSE_OPT_NOARG, option_parse_space_change },
OPT_BOOL('R', "reverse", &apply_in_reverse, OPT_BOOL('R', "reverse", &state.apply_in_reverse,
N_("apply the patch in reverse")), N_("apply the patch in reverse")),
OPT_BOOL(0, "unidiff-zero", &state.unidiff_zero, OPT_BOOL(0, "unidiff-zero", &state.unidiff_zero,
N_("don't expect at least one line of context")), N_("don't expect at least one line of context")),