tests: introduce test_ln_s_add

diff --git a/convert.c b/convert.c
index c06309f5e102c36f5751fce8cb83229ff9acca42..2a2e46c2012de3af673b9d8d8647ec894f07b65a 100644 (file)
--- a/convert.c
+++ b/convert.c
@@ -2,6 +2,7 @@
 #include "attr.h"
 #include "run-command.h"
 #include "quote.h"
+#include "sigchain.h"
 
 /*
  * convert.c - convert a file when checking it out and checking it in.
@@ -152,36 +153,13 @@ static void check_safe_crlf(const char *path, enum crlf_action crlf_action,
 
 static int has_cr_in_index(const char *path)
 {
-       int pos, len;
        unsigned long sz;
-       enum object_type type;
        void *data;
        int has_cr;
-       struct index_state *istate = &the_index;
 
-       len = strlen(path);
-       pos = index_name_pos(istate, path, len);
-       if (pos < 0) {
-               /*
-                * We might be in the middle of a merge, in which
-                * case we would read stage #2 (ours).
-                */
-               int i;
-               for (i = -pos - 1;
-                    (pos < 0 && i < istate->cache_nr &&
-                     !strcmp(istate->cache[i]->name, path));
-                    i++)
-                       if (ce_stage(istate->cache[i]) == 2)
-                               pos = i;
-       }
-       if (pos < 0)
+       data = read_blob_data_from_cache(path, &sz);
+       if (!data)
                return 0;
-       data = read_sha1_file(istate->cache[pos]->sha1, &type, &sz);
-       if (!data || type != OBJ_BLOB) {
-               free(data);
-               return 0;
-       }
-
        has_cr = memchr(data, '\r', sz) != NULL;
        free(data);
        return has_cr;
@@ -195,9 +173,17 @@ static int crlf_to_git(const char *path, const char *src, size_t len,
        char *dst;
 
        if (crlf_action == CRLF_BINARY ||
-           (crlf_action == CRLF_GUESS && auto_crlf == AUTO_CRLF_FALSE) || !len)
+           (crlf_action == CRLF_GUESS && auto_crlf == AUTO_CRLF_FALSE) ||
+           (src && !len))
                return 0;
 
+       /*
+        * If we are doing a dry-run and have no source buffer, there is
+        * nothing to analyze; we must assume we would convert.
+        */
+       if (!buf && !src)
+               return 1;
+
        gather_stats(src, len, &stats);
 
        if (crlf_action == CRLF_AUTO || crlf_action == CRLF_GUESS) {
@@ -231,6 +217,13 @@ static int crlf_to_git(const char *path, const char *src, size_t len,
        if (!stats.cr)
                return 0;
 
+       /*
+        * At this point all of our source analysis is done, and we are sure we
+        * would convert. If we are in dry-run mode, we can give an answer.
+        */
+       if (!buf)
+               return 1;
+
        /* only grow if not in place */
        if (strbuf_avail(buf) + buf->len < len)
                strbuf_grow(buf, len - buf->len);
@@ -360,12 +353,16 @@ static int filter_buffer(int in, int out, void *data)
        if (start_command(&child_process))
                return error("cannot fork to run external filter %s", params->cmd);
 
+       sigchain_push(SIGPIPE, SIG_IGN);
+
        write_err = (write_in_full(child_process.in, params->src, params->size) < 0);
        if (close(child_process.in))
                write_err = 1;
        if (write_err)
                error("cannot feed the input to external filter %s", params->cmd);
 
+       sigchain_pop(SIGPIPE);
+
        status = finish_command(&child_process);
        if (status)
                error("external filter %s failed %d", params->cmd, status);
@@ -391,6 +388,9 @@ static int apply_filter(const char *path, const char *src, size_t len,
        if (!cmd)
                return 0;
 
+       if (!dst)
+               return 1;
+
        memset(&async, 0, sizeof(async));
        async.proc = filter_buffer;
        async.data = &params;
@@ -434,7 +434,7 @@ static struct convert_driver {
 
 static int read_convert_config(const char *var, const char *value, void *cb)
 {
-       const char *ep, *name;
+       const char *key, *name;
        int namelen;
        struct convert_driver *drv;
 
@@ -442,10 +442,8 @@ static int read_convert_config(const char *var, const char *value, void *cb)
         * External conversion drivers are configured using
         * "filter.<name>.variable".
         */
-       if (prefixcmp(var, "filter.") || (ep = strrchr(var, '.')) == var + 6)
+       if (parse_config_key(var, "filter", &name, &namelen, &key) < 0 || !name)
                return 0;
-       name = var + 7;
-       namelen = ep - name;
        for (drv = user_convert; drv; drv = drv->next)
                if (!strncmp(drv->name, name, namelen) && !drv->name[namelen])
                        break;
@@ -456,8 +454,6 @@ static int read_convert_config(const char *var, const char *value, void *cb)
                user_convert_tail = &(drv->next);
        }
 
-       ep++;
-
        /*
         * filter.<name>.smudge and filter.<name>.clean specifies
         * the command line:
@@ -467,13 +463,13 @@ static int read_convert_config(const char *var, const char *value, void *cb)
         * The command-line will not be interpolated in any way.
         */
 
-       if (!strcmp("smudge", ep))
+       if (!strcmp("smudge", key))
                return git_config_string(&drv->smudge, var, value);
 
-       if (!strcmp("clean", ep))
+       if (!strcmp("clean", key))
                return git_config_string(&drv->clean, var, value);
 
-       if (!strcmp("required", ep)) {
+       if (!strcmp("required", key)) {
                drv->required = git_config_bool(var, value);
                return 0;
        }
@@ -528,9 +524,12 @@ static int ident_to_git(const char *path, const char *src, size_t len,
 {
        char *dst, *dollar;
 
-       if (!ident || !count_ident(src, len))
+       if (!ident || (src && !count_ident(src, len)))
                return 0;
 
+       if (!buf)
+               return 1;
+
        /* only grow if not in place */
        if (strbuf_avail(buf) + buf->len < len)
                strbuf_grow(buf, len - buf->len);
@@ -766,13 +765,13 @@ int convert_to_git(const char *path, const char *src, size_t len,
        if (!ret && required)
                die("%s: clean filter '%s' failed", path, ca.drv->name);
 
-       if (ret) {
+       if (ret && dst) {
                src = dst->buf;
                len = dst->len;
        }
        ca.crlf_action = input_crlf_action(ca.crlf_action, ca.eol_attr);
        ret |= crlf_to_git(path, src, len, dst, ca.crlf_action, checksafe);
-       if (ret) {
+       if (ret && dst) {
                src = dst->buf;
                len = dst->len;
        }