Add the exported function write_archive_entries() to archive.c, which uses
the new ability of read_tree_recursive() to pass a context pointer to its
callback in order to centralize previously duplicated code.
The new callback function write_archive_entry() does the work that every
archiver backend needs to do: loading file contents, entering subdirectories,
handling file attributes, constructing the full path of the entry. All that
done, it calls the backend specific write_archive_entry_fn_t function.
Signed-off-by: Rene Scharfe <rene.scharfe@xxxxxxxxxxxxxx>
---
archive.c | 77 ++++++++++++++++++++++++++++++++++++++
archive.h | 4 ++
archive-tar.c | 116 ++++++++++++++++++--------------------------------------
archive-zip.c | 90 +++++++-------------------------------------
4 files changed, 133 insertions(+), 154 deletions(-)
diff --git a/archive.c b/archive.c
index 6502b76..58de55e 100644
--- a/archive.c
+++ b/archive.c
@@ -1,6 +1,7 @@
#include "cache.h"
#include "commit.h"
#include "attr.h"
+#include "archive.h"
static void format_subst(const struct commit *commit,
const char *src, size_t len,
@@ -95,3 +96,79 @@ int is_archive_path_ignored(const char *path)
return 0;
return ATTR_TRUE(check[0].value);
}
+
+struct archiver_context {
+ struct archiver_args *args;
+ write_archive_entry_fn_t write_entry;
+};
+
+static int write_archive_entry(const unsigned char *sha1, const char *base,
+ int baselen, const char *filename, unsigned mode, int stage,
+ void *context)
+{
+ static struct strbuf path = STRBUF_INIT;
+ struct archiver_context *c = context;
+ struct archiver_args *args = c->args;
+ write_archive_entry_fn_t write_entry = c->write_entry;
+ int err;
+ enum object_type type;
+ unsigned long size;
+ void *buffer;
+
+ strbuf_reset(&path);
+ strbuf_grow(&path, PATH_MAX);
+ strbuf_add(&path, base, baselen);
+ strbuf_addstr(&path, filename);
+
+ if (is_archive_path_ignored(path.buf + args->baselen))
+ return 0;
+
+ if (S_ISDIR(mode) || S_ISGITLINK(mode)) {
+ strbuf_addch(&path, '/');
+ if (args->verbose)
+ fprintf(stderr, "%.*s\n", (int)path.len, path.buf);
+ err = write_entry(args, sha1, path.buf, path.len, mode, NULL, 0);
+ if (err)
+ return err;
+ return READ_TREE_RECURSIVE;
+ }
+
+ buffer = sha1_file_to_archive(path.buf + args->baselen, sha1, mode,
+ &type, &size, args->commit);
+ if (!buffer)
+ return error("cannot read %s", sha1_to_hex(sha1));
+ if (args->verbose)
+ fprintf(stderr, "%.*s\n", (int)path.len, path.buf);
+ err = write_entry(args, sha1, path.buf, path.len, mode, buffer, size);
+ free(buffer);
+ return err;
+}
+
+int write_archive_entries(struct archiver_args *args,
+ write_archive_entry_fn_t write_entry)
+{
+ struct archiver_context context;
+ int err;
+
+ if (args->baselen > 0 && args->base[args->baselen - 1] == '/') {
+ size_t len = args->baselen;
+
+ while (len > 1 && args->base[len - 2] == '/')
+ len--;
+ if (args->verbose)
+ fprintf(stderr, "%.*s\n", (int)len, args->base);
+ err = write_entry(args, args->tree->object.sha1, args->base,
+ len, 040777, NULL, 0);
+ if (err)
+ return err;
+ }
+
+ context.args = args;
+ context.write_entry = write_entry;
+
+ err = read_tree_recursive(args->tree, args->base, args->baselen, 0,
+ args->pathspec, write_archive_entry, &context);
+ if (err == READ_TREE_RECURSIVE)
+ err = 0;
+ return err;
+}
diff --git a/archive.h b/archive.h
index 34151f4..4e44549 100644
--- a/archive.h
+++ b/archive.h
@@ -20,6 +20,8 @@ typedef int (*write_archive_fn_t)(struct archiver_args *);
typedef void *(*parse_extra_args_fn_t)(int argc, const char **argv);
+typedef int (*write_archive_entry_fn_t)(struct archiver_args *args, const unsigned char *sha1, const char *path, size_t pathlen, unsigned int mode, void *buffer, unsigned long size);
+
struct archiver {
const char *name;
write_archive_fn_t write_archive;
@@ -44,4 +46,6 @@ extern void *parse_extra_zip_args(int argc, const char **argv);
extern void *sha1_file_to_archive(const char *path, const unsigned char *sha1, unsigned int mode, enum object_type *type, unsigned long *size, const struct commit *commit);
extern int is_archive_path_ignored(const char *path);
+extern int write_archive_entries(struct archiver_args *args, write_archive_entry_fn_t write_entry);
+
#endif /* ARCHIVE_H */
diff --git a/archive-tar.c b/archive-tar.c
index 63cc2ec..f9eb726 100644
--- a/archive-tar.c
+++ b/archive-tar.c
@@ -13,11 +13,7 @@
static char block[BLOCKSIZE];
static unsigned long offset;
-static time_t archive_time;
static int tar_umask = 002;
-static int verbose;
-static const struct commit *commit;
-static size_t base_len;
/* writes out the whole block, but only if it is full */
static void write_if_needed(void)
@@ -114,22 +110,24 @@ static unsigned int ustar_header_chksum(const struct ustar_header *header)
return chksum;
}
-static int get_path_prefix(const struct strbuf *path, int maxlen)
+static size_t get_path_prefix(const char *path, size_t pathlen, size_t maxlen)
{
- int i = path->len;
+ size_t i = pathlen;
if (i > maxlen)
i = maxlen;
do {
i--;
- } while (i > 0 && path->buf[i] != '/');
+ } while (i > 0 && path[i] != '/');
return i;
}
-static void write_entry(const unsigned char *sha1, struct strbuf *path,
- unsigned int mode, void *buffer, unsigned long size)
+static int write_tar_entry(struct archiver_args *args,
+ const unsigned char *sha1, const char *path, size_t pathlen,
+ unsigned int mode, void *buffer, unsigned long size)
{
struct ustar_header header;
struct strbuf ext_header;
+ int err = 0;
memset(&header, 0, sizeof(header));
strbuf_init(&ext_header, 0);
@@ -143,8 +141,6 @@ static void write_entry(const unsigned char *sha1, struct strbuf *path,
mode = 0100666;
sprintf(header.name, "%s.paxheader", sha1_to_hex(sha1));
} else {
- if (verbose)
- fprintf(stderr, "%.*s\n", (int)path->len, path->buf);
if (S_ISDIR(mode) || S_ISGITLINK(mode)) {
*header.typeflag = TYPEFLAG_DIR;
mode = (mode | 0777) & ~tar_umask;
@@ -155,24 +151,24 @@ static void write_entry(const unsigned char *sha1, struct strbuf *path,
*header.typeflag = TYPEFLAG_REG;
mode = (mode | ((mode & 0100) ? 0777 : 0666)) & ~tar_umask;
} else {
- error("unsupported file mode: 0%o (SHA1: %s)",
- mode, sha1_to_hex(sha1));
- return;
+ return error("unsupported file mode: 0%o (SHA1: %s)",
+ mode, sha1_to_hex(sha1));
}
- if (path->len > sizeof(header.name)) {
- int plen = get_path_prefix(path, sizeof(header.prefix));
- int rest = path->len - plen - 1;
+ if (pathlen > sizeof(header.name)) {
+ size_t plen = get_path_prefix(path, pathlen,
+ sizeof(header.prefix));
+ size_t rest = pathlen - plen - 1;
if (plen > 0 && rest <= sizeof(header.name)) {
- memcpy(header.prefix, path->buf, plen);
- memcpy(header.name, path->buf + plen + 1, rest);
+ memcpy(header.prefix, path, plen);
+ memcpy(header.name, path + plen + 1, rest);
} else {
sprintf(header.name, "%s.data",
sha1_to_hex(sha1));
strbuf_append_ext_header(&ext_header, "path",
- path->buf, path->len);
+ path, pathlen);
}
} else
- memcpy(header.name, path->buf, path->len);
+ memcpy(header.name, path, pathlen);
}
if (S_ISLNK(mode) && buffer) {
@@ -187,7 +183,7 @@ static void write_entry(const unsigned char *sha1, struct strbuf *path,
sprintf(header.mode, "%07o", mode & 07777);
sprintf(header.size, "%011lo", S_ISREG(mode) ? size : 0);
- sprintf(header.mtime, "%011lo", archive_time);
+ sprintf(header.mtime, "%011lo", args->time);
sprintf(header.uid, "%07o", 0);
sprintf(header.gid, "%07o", 0);
@@ -202,22 +198,30 @@ static void write_entry(const unsigned char *sha1, struct strbuf *path,
sprintf(header.chksum, "%07o", ustar_header_chksum(&header));
if (ext_header.len > 0) {
- write_entry(sha1, NULL, 0, ext_header.buf, ext_header.len);
+ err = write_tar_entry(args, sha1, NULL, 0, 0, ext_header.buf,
+ ext_header.len);
+ if (err)
+ return err;
}
strbuf_release(&ext_header);
write_blocked(&header, sizeof(header));
if (S_ISREG(mode) && buffer && size > 0)
write_blocked(buffer, size);
+ return err;
}
-static void write_global_extended_header(const unsigned char *sha1)
+static int write_global_extended_header(struct archiver_args *args)
{
+ const unsigned char *sha1 = args->commit_sha1;
struct strbuf ext_header;
+ int err;
strbuf_init(&ext_header, 0);
strbuf_append_ext_header(&ext_header, "comment", sha1_to_hex(sha1), 40);
- write_entry(NULL, NULL, 0, ext_header.buf, ext_header.len);
+ err = write_tar_entry(args, NULL, NULL, 0, 0, ext_header.buf,
+ ext_header.len);
strbuf_release(&ext_header);
+ return err;
}
static int git_tar_config(const char *var, const char *value, void *cb)
@@ -234,63 +238,17 @@ static int git_tar_config(const char *var, const char *value, void *cb)
return git_default_config(var, value, cb);
}
-static int write_tar_entry(const unsigned char *sha1, const char *base,
- int baselen, const char *filename, unsigned mode, int stage,
- void *context)
-{
- static struct strbuf path = STRBUF_INIT;
- void *buffer;
- enum object_type type;
- unsigned long size;
-
- strbuf_reset(&path);
- strbuf_grow(&path, PATH_MAX);
- strbuf_add(&path, base, baselen);
- strbuf_addstr(&path, filename);
- if (is_archive_path_ignored(path.buf + base_len))
- return 0;
- if (S_ISDIR(mode) || S_ISGITLINK(mode)) {
- strbuf_addch(&path, '/');
- buffer = NULL;
- size = 0;
- } else {
- buffer = sha1_file_to_archive(path.buf + base_len, sha1, mode,
- &type, &size, commit);
- if (!buffer)
- die("cannot read %s", sha1_to_hex(sha1));
- }
-
- write_entry(sha1, &path, mode, buffer, size);
- free(buffer);
-
- return READ_TREE_RECURSIVE;
-}
-
int write_tar_archive(struct archiver_args *args)
{
- git_config(git_tar_config, NULL);
+ int err = 0;
- archive_time = args->time;
- verbose = args->verbose;
- commit = args->commit;
- base_len = args->baselen;
+ git_config(git_tar_config, NULL);
if (args->commit_sha1)
- write_global_extended_header(args->commit_sha1);
-
- if (args->baselen > 0 && args->base[args->baselen - 1] == '/') {
- char *base = xstrdup(args->base);
- int baselen = strlen(base);
-
- while (baselen > 0 && base[baselen - 1] == '/')
- base[--baselen] = '\0';
- write_tar_entry(args->tree->object.sha1, "", 0, base, 040777,
- 0, NULL);
- free(base);
- }
- read_tree_recursive(args->tree, args->base, args->baselen, 0,
- args->pathspec, write_tar_entry, NULL);
- write_trailer();
-
- return 0;
+ err = write_global_extended_header(args);
+ if (!err)
+ err = write_archive_entries(args, write_tar_entry);
+ if (!err)
+ write_trailer();
+ return err;
}
diff --git a/archive-zip.c b/archive-zip.c
index d18254c..8131289 100644
--- a/archive-zip.c
+++ b/archive-zip.c
@@ -9,11 +9,8 @@
#include "builtin.h"
#include "archive.h"
-static int verbose;
static int zip_date;
static int zip_time;
-static const struct commit *commit;
-static size_t base_len;
static unsigned char *zip_dir;
static unsigned int zip_dir_size;
@@ -128,33 +125,9 @@ static void *zlib_deflate(void *data, unsigned long size,
return buffer;
}
-static char *construct_path(const char *base, int baselen,
- const char *filename, int isdir, int *pathlen)
-{
- int filenamelen = strlen(filename);
- int len = baselen + filenamelen;
- char *path, *p;
-
- if (isdir)
- len++;
- p = path = xmalloc(len + 1);
-
- memcpy(p, base, baselen);
- p += baselen;
- memcpy(p, filename, filenamelen);
- p += filenamelen;
- if (isdir)
- *p++ = '/';
- *p = '\0';
-
- *pathlen = len;
-
- return path;
-}
-
-static int write_zip_entry(const unsigned char *sha1, const char *base,
- int baselen, const char *filename, unsigned mode, int stage,
- void *context)
+static int write_zip_entry(struct archiver_args *args,
+ const unsigned char *sha1, const char *path, size_t pathlen,
+ unsigned int mode, void *buffer, unsigned long size)
{
struct zip_local_header header;
struct zip_dir_header dirent;
@@ -163,33 +136,20 @@ static int write_zip_entry(const unsigned char *sha1, const char *base,
unsigned long uncompressed_size;
unsigned long crc;
unsigned long direntsize;
- unsigned long size;
int method;
- int result = -1;
- int pathlen;
unsigned char *out;
- char *path;
- enum object_type type;
- void *buffer = NULL;
void *deflated = NULL;
crc = crc32(0, NULL, 0);
- path = construct_path(base, baselen, filename, S_ISDIR(mode), &pathlen);
- if (is_archive_path_ignored(path + base_len))
- return 0;
- if (verbose)
- fprintf(stderr, "%s\n", path);
if (pathlen > 0xffff) {
- error("path too long (%d chars, SHA1: %s): %s", pathlen,
- sha1_to_hex(sha1), path);
- goto out;
+ return error("path too long (%d chars, SHA1: %s): %s",
+ (int)pathlen, sha1_to_hex(sha1), path);
}
if (S_ISDIR(mode) || S_ISGITLINK(mode)) {
method = 0;
attr2 = 16;
- result = (S_ISDIR(mode) ? READ_TREE_RECURSIVE : 0);
out = NULL;
uncompressed_size = 0;
compressed_size = 0;
@@ -199,19 +159,13 @@ static int write_zip_entry(const unsigned char *sha1, const char *base,
(mode & 0111) ? ((mode) << 16) : 0;
if (S_ISREG(mode) && zlib_compression_level != 0)
method = 8;
- result = 0;
- buffer = sha1_file_to_archive(path + base_len, sha1, mode,
- &type, &size, commit);
- if (!buffer)
- die("cannot read %s", sha1_to_hex(sha1));
crc = crc32(crc, buffer, size);
out = buffer;
uncompressed_size = size;
compressed_size = size;
} else {
- error("unsupported file mode: 0%o (SHA1: %s)", mode,
- sha1_to_hex(sha1));
- goto out;
+ return error("unsupported file mode: 0%o (SHA1: %s)", mode,
+ sha1_to_hex(sha1));
}
if (method == 8) {
@@ -278,12 +232,9 @@ static int write_zip_entry(const unsigned char *sha1, const char *base,
zip_offset += compressed_size;
}
-out:
- free(buffer);
free(deflated);
- free(path);
- return result;
+ return 0;
}
static void write_zip_trailer(const unsigned char *sha1)
@@ -316,31 +267,20 @@ static void dos_time(time_t *time, int *dos_date, int *dos_time)
int write_zip_archive(struct archiver_args *args)
{
+ int err;
+
dos_time(&args->time, &zip_date, &zip_time);
zip_dir = xmalloc(ZIP_DIRECTORY_MIN_SIZE);
zip_dir_size = ZIP_DIRECTORY_MIN_SIZE;
- verbose = args->verbose;
- commit = args->commit;
- base_len = args->baselen;
-
- if (args->baselen > 0 && args->base[args->baselen - 1] == '/') {
- char *base = xstrdup(args->base);
- int baselen = strlen(base);
-
- while (baselen > 0 && base[baselen - 1] == '/')
- base[--baselen] = '\0';
- write_zip_entry(args->tree->object.sha1, "", 0, base, 040777,
- 0, NULL);
- free(base);
- }
- read_tree_recursive(args->tree, args->base, args->baselen, 0,
- args->pathspec, write_zip_entry, NULL);
- write_zip_trailer(args->commit_sha1);
+
+ err = write_archive_entries(args, write_zip_entry);
+ if (!err)
+ write_zip_trailer(args->commit_sha1);
free(zip_dir);
- return 0;
+ return err;
}
void *parse_extra_zip_args(int argc, const char **argv)
--
1.5.6.2.212.g08b51
--
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