Merge branch 'jc/fetch-progressive-stride'
[gitweb.git] / vcs-svn / svndump.c
index 322d1cd305868c5d4eef910b729aeaeeab899b01..eef49ca1928d21f7bb0d038693fd92c2a6e5ac85 100644 (file)
@@ -11,8 +11,8 @@
 #include "repo_tree.h"
 #include "fast_export.h"
 #include "line_buffer.h"
-#include "obj_pool.h"
 #include "string_pool.h"
+#include "strbuf.h"
 
 /*
  * Compare start of string to literal of equal length;
 #define LENGTH_UNKNOWN (~0)
 #define DATE_RFC2822_LEN 31
 
-/* Create memory pool for log messages */
-obj_pool_gen(log, char, 4096)
-
 static struct line_buffer input = LINE_BUFFER_INIT;
 
-static char *log_copy(uint32_t length, const char *log)
-{
-       char *buffer;
-       log_free(log_pool.size);
-       buffer = log_pointer(log_alloc(length));
-       strncpy(buffer, log, length);
-       return buffer;
-}
-
 static struct {
        uint32_t action, propLength, textLength, srcRev, type;
        uint32_t src[REPO_MAX_PATH_DEPTH], dst[REPO_MAX_PATH_DEPTH];
@@ -54,23 +42,16 @@ static struct {
 } node_ctx;
 
 static struct {
-       uint32_t revision, author;
+       uint32_t revision;
        unsigned long timestamp;
-       char *log;
+       struct strbuf log, author;
 } rev_ctx;
 
 static struct {
-       uint32_t version, uuid, url;
+       uint32_t version;
+       struct strbuf uuid, url;
 } dump_ctx;
 
-static struct {
-       uint32_t uuid, revision_number, node_path, node_kind, node_action,
-               node_copyfrom_path, node_copyfrom_rev, text_content_length,
-               prop_content_length, content_length, svn_fs_dump_format_version,
-               /* version 3 format */
-               text_delta, prop_delta;
-} keys;
-
 static void reset_node_ctx(char *fname)
 {
        node_ctx.type = 0;
@@ -88,37 +69,21 @@ static void reset_rev_ctx(uint32_t revision)
 {
        rev_ctx.revision = revision;
        rev_ctx.timestamp = 0;
-       rev_ctx.log = NULL;
-       rev_ctx.author = ~0;
+       strbuf_reset(&rev_ctx.log);
+       strbuf_reset(&rev_ctx.author);
 }
 
-static void reset_dump_ctx(uint32_t url)
+static void reset_dump_ctx(const char *url)
 {
-       dump_ctx.url = url;
+       strbuf_reset(&dump_ctx.url);
+       if (url)
+               strbuf_addstr(&dump_ctx.url, url);
        dump_ctx.version = 1;
-       dump_ctx.uuid = ~0;
-}
-
-static void init_keys(void)
-{
-       keys.uuid = pool_intern("UUID");
-       keys.revision_number = pool_intern("Revision-number");
-       keys.node_path = pool_intern("Node-path");
-       keys.node_kind = pool_intern("Node-kind");
-       keys.node_action = pool_intern("Node-action");
-       keys.node_copyfrom_path = pool_intern("Node-copyfrom-path");
-       keys.node_copyfrom_rev = pool_intern("Node-copyfrom-rev");
-       keys.text_content_length = pool_intern("Text-content-length");
-       keys.prop_content_length = pool_intern("Prop-content-length");
-       keys.content_length = pool_intern("Content-length");
-       keys.svn_fs_dump_format_version = pool_intern("SVN-fs-dump-format-version");
-       /* version 3 format (Subversion 1.1.0) */
-       keys.text_delta = pool_intern("Text-delta");
-       keys.prop_delta = pool_intern("Prop-delta");
+       strbuf_reset(&dump_ctx.uuid);
 }
 
 static void handle_property(const struct strbuf *key_buf,
-                               const char *val, uint32_t len,
+                               struct strbuf *val,
                                uint32_t *type_set)
 {
        const char *key = key_buf->buf;
@@ -130,21 +95,23 @@ static void handle_property(const struct strbuf *key_buf,
                        break;
                if (!val)
                        die("invalid dump: unsets svn:log");
-               /* Value length excludes terminating nul. */
-               rev_ctx.log = log_copy(len + 1, val);
+               strbuf_swap(&rev_ctx.log, val);
                break;
        case sizeof("svn:author"):
                if (constcmp(key, "svn:author"))
                        break;
-               rev_ctx.author = pool_intern(val);
+               if (!val)
+                       strbuf_reset(&rev_ctx.author);
+               else
+                       strbuf_swap(&rev_ctx.author, val);
                break;
        case sizeof("svn:date"):
                if (constcmp(key, "svn:date"))
                        break;
                if (!val)
                        die("invalid dump: unsets svn:date");
-               if (parse_date_basic(val, &rev_ctx.timestamp, NULL))
-                       warning("invalid timestamp: %s", val);
+               if (parse_date_basic(val->buf, &rev_ctx.timestamp, NULL))
+                       warning("invalid timestamp: %s", val->buf);
                break;
        case sizeof("svn:executable"):
        case sizeof("svn:special"):
@@ -180,6 +147,7 @@ static void die_short_read(void)
 static void read_props(void)
 {
        static struct strbuf key = STRBUF_INIT;
+       static struct strbuf val = STRBUF_INIT;
        const char *t;
        /*
         * NEEDSWORK: to support simple mode changes like
@@ -196,15 +164,15 @@ static void read_props(void)
        uint32_t type_set = 0;
        while ((t = buffer_read_line(&input)) && strcmp(t, "PROPS-END")) {
                uint32_t len;
-               const char *val;
                const char type = t[0];
                int ch;
 
                if (!type || t[1] != ' ')
                        die("invalid property line: %s\n", t);
                len = atoi(&t[2]);
-               val = buffer_read_string(&input, len);
-               if (!val || strlen(val) != len)
+               strbuf_reset(&val);
+               buffer_read_binary(&input, &val, len);
+               if (val.len < len)
                        die_short_read();
 
                /* Discard trailing newline. */
@@ -212,22 +180,17 @@ static void read_props(void)
                if (ch == EOF)
                        die_short_read();
                if (ch != '\n')
-                       die("invalid dump: expected newline after %s", val);
+                       die("invalid dump: expected newline after %s", val.buf);
 
                switch (type) {
                case 'K':
+                       strbuf_swap(&key, &val);
+                       continue;
                case 'D':
-                       strbuf_reset(&key);
-                       if (val)
-                               strbuf_add(&key, val, len);
-                       if (type == 'K')
-                               continue;
-                       assert(type == 'D');
-                       val = NULL;
-                       len = 0;
-                       /* fall through */
+                       handle_property(&val, NULL, &type_set);
+                       continue;
                case 'V':
-                       handle_property(&key, val, len, &type_set);
+                       handle_property(&key, &val, &type_set);
                        strbuf_reset(&key);
                        continue;
                default:
@@ -310,8 +273,9 @@ static void handle_node(void)
 static void handle_revision(void)
 {
        if (rev_ctx.revision)
-               repo_commit(rev_ctx.revision, rev_ctx.author, rev_ctx.log,
-                       dump_ctx.uuid, dump_ctx.url, rev_ctx.timestamp);
+               repo_commit(rev_ctx.revision, rev_ctx.author.buf,
+                       &rev_ctx.log, dump_ctx.uuid.buf, dump_ctx.url.buf,
+                       rev_ctx.timestamp);
 }
 
 void svndump_read(const char *url)
@@ -320,44 +284,65 @@ void svndump_read(const char *url)
        char *t;
        uint32_t active_ctx = DUMP_CTX;
        uint32_t len;
-       uint32_t key;
 
-       reset_dump_ctx(pool_intern(url));
+       reset_dump_ctx(url);
        while ((t = buffer_read_line(&input))) {
-               val = strstr(t, ": ");
+               val = strchr(t, ':');
                if (!val)
                        continue;
-               *val++ = '\0';
-               *val++ = '\0';
-               key = pool_intern(t);
+               val++;
+               if (*val != ' ')
+                       continue;
+               val++;
 
-               if (key == keys.svn_fs_dump_format_version) {
+               /* strlen(key) + 1 */
+               switch (val - t - 1) {
+               case sizeof("SVN-fs-dump-format-version"):
+                       if (constcmp(t, "SVN-fs-dump-format-version"))
+                               continue;
                        dump_ctx.version = atoi(val);
                        if (dump_ctx.version > 3)
                                die("expected svn dump format version <= 3, found %"PRIu32,
                                    dump_ctx.version);
-               } else if (key == keys.uuid) {
-                       dump_ctx.uuid = pool_intern(val);
-               } else if (key == keys.revision_number) {
+                       break;
+               case sizeof("UUID"):
+                       if (constcmp(t, "UUID"))
+                               continue;
+                       strbuf_reset(&dump_ctx.uuid);
+                       strbuf_addstr(&dump_ctx.uuid, val);
+                       break;
+               case sizeof("Revision-number"):
+                       if (constcmp(t, "Revision-number"))
+                               continue;
                        if (active_ctx == NODE_CTX)
                                handle_node();
                        if (active_ctx != DUMP_CTX)
                                handle_revision();
                        active_ctx = REV_CTX;
                        reset_rev_ctx(atoi(val));
-               } else if (key == keys.node_path) {
-                       if (active_ctx == NODE_CTX)
-                               handle_node();
-                       active_ctx = NODE_CTX;
-                       reset_node_ctx(val);
-               } else if (key == keys.node_kind) {
+                       break;
+               case sizeof("Node-path"):
+                       if (prefixcmp(t, "Node-"))
+                               continue;
+                       if (!constcmp(t + strlen("Node-"), "path")) {
+                               if (active_ctx == NODE_CTX)
+                                       handle_node();
+                               active_ctx = NODE_CTX;
+                               reset_node_ctx(val);
+                               break;
+                       }
+                       if (constcmp(t + strlen("Node-"), "kind"))
+                               continue;
                        if (!strcmp(val, "dir"))
                                node_ctx.type = REPO_MODE_DIR;
                        else if (!strcmp(val, "file"))
                                node_ctx.type = REPO_MODE_BLB;
                        else
                                fprintf(stderr, "Unknown node-kind: %s\n", val);
-               } else if (key == keys.node_action) {
+                       break;
+               case sizeof("Node-action"):
+                       if (constcmp(t, "Node-action"))
+                               continue;
                        if (!strcmp(val, "delete")) {
                                node_ctx.action = NODEACT_DELETE;
                        } else if (!strcmp(val, "add")) {
@@ -370,19 +355,38 @@ void svndump_read(const char *url)
                                fprintf(stderr, "Unknown node-action: %s\n", val);
                                node_ctx.action = NODEACT_UNKNOWN;
                        }
-               } else if (key == keys.node_copyfrom_path) {
+                       break;
+               case sizeof("Node-copyfrom-path"):
+                       if (constcmp(t, "Node-copyfrom-path"))
+                               continue;
                        pool_tok_seq(REPO_MAX_PATH_DEPTH, node_ctx.src, "/", val);
-               } else if (key == keys.node_copyfrom_rev) {
+                       break;
+               case sizeof("Node-copyfrom-rev"):
+                       if (constcmp(t, "Node-copyfrom-rev"))
+                               continue;
                        node_ctx.srcRev = atoi(val);
-               } else if (key == keys.text_content_length) {
-                       node_ctx.textLength = atoi(val);
-               } else if (key == keys.prop_content_length) {
+                       break;
+               case sizeof("Text-content-length"):
+                       if (!constcmp(t, "Text-content-length")) {
+                               node_ctx.textLength = atoi(val);
+                               break;
+                       }
+                       if (constcmp(t, "Prop-content-length"))
+                               continue;
                        node_ctx.propLength = atoi(val);
-               } else if (key == keys.text_delta) {
-                       node_ctx.text_delta = !strcmp(val, "true");
-               } else if (key == keys.prop_delta) {
+                       break;
+               case sizeof("Text-delta"):
+                       if (!constcmp(t, "Text-delta")) {
+                               node_ctx.text_delta = !strcmp(val, "true");
+                               break;
+                       }
+                       if (constcmp(t, "Prop-delta"))
+                               continue;
                        node_ctx.prop_delta = !strcmp(val, "true");
-               } else if (key == keys.content_length) {
+                       break;
+               case sizeof("Content-length"):
+                       if (constcmp(t, "Content-length"))
+                               continue;
                        len = atoi(val);
                        t = buffer_read_line(&input);
                        if (!t)
@@ -414,20 +418,23 @@ int svndump_init(const char *filename)
        if (buffer_init(&input, filename))
                return error("cannot open %s: %s", filename, strerror(errno));
        repo_init();
-       reset_dump_ctx(~0);
+       strbuf_init(&dump_ctx.uuid, 4096);
+       strbuf_init(&dump_ctx.url, 4096);
+       strbuf_init(&rev_ctx.log, 4096);
+       strbuf_init(&rev_ctx.author, 4096);
+       reset_dump_ctx(NULL);
        reset_rev_ctx(0);
        reset_node_ctx(NULL);
-       init_keys();
        return 0;
 }
 
 void svndump_deinit(void)
 {
-       log_reset();
        repo_reset();
-       reset_dump_ctx(~0);
+       reset_dump_ctx(NULL);
        reset_rev_ctx(0);
        reset_node_ctx(NULL);
+       strbuf_release(&rev_ctx.log);
        if (buffer_deinit(&input))
                fprintf(stderr, "Input error\n");
        if (ferror(stdout))
@@ -436,10 +443,10 @@ void svndump_deinit(void)
 
 void svndump_reset(void)
 {
-       log_reset();
        buffer_reset(&input);
        repo_reset();
-       reset_dump_ctx(~0);
-       reset_rev_ctx(0);
-       reset_node_ctx(NULL);
+       strbuf_release(&dump_ctx.uuid);
+       strbuf_release(&dump_ctx.url);
+       strbuf_release(&rev_ctx.log);
+       strbuf_release(&rev_ctx.author);
 }