diff options
Diffstat (limited to 'third_party/git/vcs-svn/svndump.c')
| -rw-r--r-- | third_party/git/vcs-svn/svndump.c | 540 |
1 files changed, 0 insertions, 540 deletions
diff --git a/third_party/git/vcs-svn/svndump.c b/third_party/git/vcs-svn/svndump.c deleted file mode 100644 index 08d136b8cc..0000000000 --- a/third_party/git/vcs-svn/svndump.c +++ /dev/null @@ -1,540 +0,0 @@ -/* - * Parse and rearrange a svnadmin dump. - * Create the dump with: - * svnadmin dump --incremental -r<startrev>:<endrev> <repository> >outfile - * - * Licensed under a two-clause BSD-style license. - * See LICENSE for details. - */ - -#include "cache.h" -#include "fast_export.h" -#include "line_buffer.h" -#include "strbuf.h" -#include "svndump.h" - -/* - * Compare start of string to literal of equal length; - * must be guarded by length test. - */ -#define constcmp(s, ref) memcmp(s, ref, sizeof(ref) - 1) - -#define REPORT_FILENO 3 - -#define NODEACT_REPLACE 4 -#define NODEACT_DELETE 3 -#define NODEACT_ADD 2 -#define NODEACT_CHANGE 1 -#define NODEACT_UNKNOWN 0 - -/* States: */ -#define DUMP_CTX 0 /* dump metadata */ -#define REV_CTX 1 /* revision metadata */ -#define NODE_CTX 2 /* node metadata */ -#define INTERNODE_CTX 3 /* between nodes */ - -#define DATE_RFC2822_LEN 31 - -static struct line_buffer input = LINE_BUFFER_INIT; - -static struct { - uint32_t action, srcRev, type; - off_t prop_length, text_length; - struct strbuf src, dst; - uint32_t text_delta, prop_delta; -} node_ctx; - -static struct { - uint32_t revision; - timestamp_t timestamp; - struct strbuf log, author, note; -} rev_ctx; - -static struct { - uint32_t version; - struct strbuf uuid, url; -} dump_ctx; - -static void reset_node_ctx(char *fname) -{ - node_ctx.type = 0; - node_ctx.action = NODEACT_UNKNOWN; - node_ctx.prop_length = -1; - node_ctx.text_length = -1; - strbuf_reset(&node_ctx.src); - node_ctx.srcRev = 0; - strbuf_reset(&node_ctx.dst); - if (fname) - strbuf_addstr(&node_ctx.dst, fname); - node_ctx.text_delta = 0; - node_ctx.prop_delta = 0; -} - -static void reset_rev_ctx(uint32_t revision) -{ - rev_ctx.revision = revision; - rev_ctx.timestamp = 0; - strbuf_reset(&rev_ctx.log); - strbuf_reset(&rev_ctx.author); - strbuf_reset(&rev_ctx.note); -} - -static void reset_dump_ctx(const char *url) -{ - strbuf_reset(&dump_ctx.url); - if (url) - strbuf_addstr(&dump_ctx.url, url); - dump_ctx.version = 1; - strbuf_reset(&dump_ctx.uuid); -} - -static void handle_property(const struct strbuf *key_buf, - struct strbuf *val, - uint32_t *type_set) -{ - const char *key = key_buf->buf; - size_t keylen = key_buf->len; - - switch (keylen + 1) { - case sizeof("svn:log"): - if (constcmp(key, "svn:log")) - break; - if (!val) - die("invalid dump: unsets svn:log"); - strbuf_swap(&rev_ctx.log, val); - break; - case sizeof("svn:author"): - if (constcmp(key, "svn:author")) - break; - 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->buf, &rev_ctx.timestamp, NULL)) - warning("invalid timestamp: %s", val->buf); - break; - case sizeof("svn:executable"): - case sizeof("svn:special"): - if (keylen == strlen("svn:executable") && - constcmp(key, "svn:executable")) - break; - if (keylen == strlen("svn:special") && - constcmp(key, "svn:special")) - break; - if (*type_set) { - if (!val) - return; - die("invalid dump: sets type twice"); - } - if (!val) { - node_ctx.type = S_IFREG | 0644; - return; - } - *type_set = 1; - node_ctx.type = keylen == strlen("svn:executable") ? - (S_IFREG | 0755) : - S_IFLNK; - } -} - -static void die_short_read(void) -{ - if (buffer_ferror(&input)) - die_errno("error reading dump file"); - die("invalid dump: unexpected end of file"); -} - -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 - * K 11 - * svn:special - * V 1 - * * - * D 14 - * svn:executable - * we keep track of whether a mode has been set and reset to - * plain file only if not. We should be keeping track of the - * symlink and executable bits separately instead. - */ - uint32_t type_set = 0; - while ((t = buffer_read_line(&input)) && strcmp(t, "PROPS-END")) { - uint32_t len; - const char type = t[0]; - int ch; - - if (!type || t[1] != ' ') - die("invalid property line: %s", t); - len = atoi(&t[2]); - strbuf_reset(&val); - buffer_read_binary(&input, &val, len); - if (val.len < len) - die_short_read(); - - /* Discard trailing newline. */ - ch = buffer_read_char(&input); - if (ch == EOF) - die_short_read(); - if (ch != '\n') - die("invalid dump: expected newline after %s", val.buf); - - switch (type) { - case 'K': - strbuf_swap(&key, &val); - continue; - case 'D': - handle_property(&val, NULL, &type_set); - continue; - case 'V': - handle_property(&key, &val, &type_set); - strbuf_reset(&key); - continue; - default: - die("invalid property line: %s", t); - } - } -} - -static void handle_node(void) -{ - const uint32_t type = node_ctx.type; - const int have_props = node_ctx.prop_length != -1; - const int have_text = node_ctx.text_length != -1; - /* - * Old text for this node: - * NULL - directory or bug - * empty_blob - empty - * "<dataref>" - data retrievable from fast-import - */ - static const char *const empty_blob = "::empty::"; - const char *old_data = NULL; - uint32_t old_mode = S_IFREG | 0644; - - if (node_ctx.action == NODEACT_DELETE) { - if (have_text || have_props || node_ctx.srcRev) - die("invalid dump: deletion node has " - "copyfrom info, text, or properties"); - fast_export_delete(node_ctx.dst.buf); - return; - } - if (node_ctx.action == NODEACT_REPLACE) { - fast_export_delete(node_ctx.dst.buf); - node_ctx.action = NODEACT_ADD; - } - if (node_ctx.srcRev) { - fast_export_copy(node_ctx.srcRev, node_ctx.src.buf, node_ctx.dst.buf); - if (node_ctx.action == NODEACT_ADD) - node_ctx.action = NODEACT_CHANGE; - } - if (have_text && type == S_IFDIR) - die("invalid dump: directories cannot have text attached"); - - /* - * Find old content (old_data) and decide on the new mode. - */ - if (node_ctx.action == NODEACT_CHANGE && !*node_ctx.dst.buf) { - if (type != S_IFDIR) - die("invalid dump: root of tree is not a regular file"); - old_data = NULL; - } else if (node_ctx.action == NODEACT_CHANGE) { - uint32_t mode; - old_data = fast_export_read_path(node_ctx.dst.buf, &mode); - if (mode == S_IFDIR && type != S_IFDIR) - die("invalid dump: cannot modify a directory into a file"); - if (mode != S_IFDIR && type == S_IFDIR) - die("invalid dump: cannot modify a file into a directory"); - node_ctx.type = mode; - old_mode = mode; - } else if (node_ctx.action == NODEACT_ADD) { - if (type == S_IFDIR) - old_data = NULL; - else if (have_text) - old_data = empty_blob; - else - die("invalid dump: adds node without text"); - } else { - die("invalid dump: Node-path block lacks Node-action"); - } - - /* - * Adjust mode to reflect properties. - */ - if (have_props) { - if (!node_ctx.prop_delta) - node_ctx.type = type; - if (node_ctx.prop_length) - read_props(); - } - - /* - * Save the result. - */ - if (type == S_IFDIR) /* directories are not tracked. */ - return; - assert(old_data); - if (old_data == empty_blob) - /* For the fast_export_* functions, NULL means empty. */ - old_data = NULL; - if (!have_text) { - fast_export_modify(node_ctx.dst.buf, node_ctx.type, old_data); - return; - } - if (!node_ctx.text_delta) { - fast_export_modify(node_ctx.dst.buf, node_ctx.type, "inline"); - fast_export_data(node_ctx.type, node_ctx.text_length, &input); - return; - } - fast_export_modify(node_ctx.dst.buf, node_ctx.type, "inline"); - fast_export_blob_delta(node_ctx.type, old_mode, old_data, - node_ctx.text_length, &input); -} - -static void begin_revision(const char *remote_ref) -{ - if (!rev_ctx.revision) /* revision 0 gets no git commit. */ - return; - fast_export_begin_commit(rev_ctx.revision, rev_ctx.author.buf, - &rev_ctx.log, dump_ctx.uuid.buf, dump_ctx.url.buf, - rev_ctx.timestamp, remote_ref); -} - -static void end_revision(const char *note_ref) -{ - struct strbuf mark = STRBUF_INIT; - if (rev_ctx.revision) { - fast_export_end_commit(rev_ctx.revision); - fast_export_begin_note(rev_ctx.revision, "remote-svn", - "Note created by remote-svn.", rev_ctx.timestamp, note_ref); - strbuf_addf(&mark, ":%"PRIu32, rev_ctx.revision); - fast_export_note(mark.buf, "inline"); - fast_export_buf_to_data(&rev_ctx.note); - strbuf_release(&mark); - } -} - -void svndump_read(const char *url, const char *local_ref, const char *notes_ref) -{ - char *val; - char *t; - uint32_t active_ctx = DUMP_CTX; - uint32_t len; - - reset_dump_ctx(url); - while ((t = buffer_read_line(&input))) { - val = strchr(t, ':'); - if (!val) - continue; - val++; - if (*val != ' ') - continue; - val++; - - /* 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); - 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 == REV_CTX) - begin_revision(local_ref); - if (active_ctx != DUMP_CTX) - end_revision(notes_ref); - active_ctx = REV_CTX; - reset_rev_ctx(atoi(val)); - strbuf_addf(&rev_ctx.note, "%s\n", t); - break; - case sizeof("Node-path"): - if (constcmp(t, "Node-")) - continue; - if (!constcmp(t + strlen("Node-"), "path")) { - if (active_ctx == NODE_CTX) - handle_node(); - if (active_ctx == REV_CTX) - begin_revision(local_ref); - active_ctx = NODE_CTX; - reset_node_ctx(val); - strbuf_addf(&rev_ctx.note, "%s\n", t); - break; - } - if (constcmp(t + strlen("Node-"), "kind")) - continue; - strbuf_addf(&rev_ctx.note, "%s\n", t); - if (!strcmp(val, "dir")) - node_ctx.type = S_IFDIR; - else if (!strcmp(val, "file")) - node_ctx.type = S_IFREG | 0644; - else - fprintf(stderr, "Unknown node-kind: %s\n", val); - break; - case sizeof("Node-action"): - if (constcmp(t, "Node-action")) - continue; - strbuf_addf(&rev_ctx.note, "%s\n", t); - if (!strcmp(val, "delete")) { - node_ctx.action = NODEACT_DELETE; - } else if (!strcmp(val, "add")) { - node_ctx.action = NODEACT_ADD; - } else if (!strcmp(val, "change")) { - node_ctx.action = NODEACT_CHANGE; - } else if (!strcmp(val, "replace")) { - node_ctx.action = NODEACT_REPLACE; - } else { - fprintf(stderr, "Unknown node-action: %s\n", val); - node_ctx.action = NODEACT_UNKNOWN; - } - break; - case sizeof("Node-copyfrom-path"): - if (constcmp(t, "Node-copyfrom-path")) - continue; - strbuf_reset(&node_ctx.src); - strbuf_addstr(&node_ctx.src, val); - strbuf_addf(&rev_ctx.note, "%s\n", t); - break; - case sizeof("Node-copyfrom-rev"): - if (constcmp(t, "Node-copyfrom-rev")) - continue; - node_ctx.srcRev = atoi(val); - strbuf_addf(&rev_ctx.note, "%s\n", t); - break; - case sizeof("Text-content-length"): - if (constcmp(t, "Text") && constcmp(t, "Prop")) - continue; - if (constcmp(t + 4, "-content-length")) - continue; - { - char *end; - uintmax_t len; - - len = strtoumax(val, &end, 10); - if (!isdigit(*val) || *end) - die("invalid dump: non-numeric length %s", val); - if (len > maximum_signed_value_of_type(off_t)) - die("unrepresentable length in dump: %s", val); - - if (*t == 'T') - node_ctx.text_length = (off_t) len; - else - node_ctx.prop_length = (off_t) len; - 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"); - break; - case sizeof("Content-length"): - if (constcmp(t, "Content-length")) - continue; - len = atoi(val); - t = buffer_read_line(&input); - if (!t) - die_short_read(); - if (*t) - die("invalid dump: expected blank line after content length header"); - if (active_ctx == REV_CTX) { - read_props(); - } else if (active_ctx == NODE_CTX) { - handle_node(); - active_ctx = INTERNODE_CTX; - } else { - fprintf(stderr, "Unexpected content length header: %"PRIu32"\n", len); - if (buffer_skip_bytes(&input, len) != len) - die_short_read(); - } - } - } - if (buffer_ferror(&input)) - die_short_read(); - if (active_ctx == NODE_CTX) - handle_node(); - if (active_ctx == REV_CTX) - begin_revision(local_ref); - if (active_ctx != DUMP_CTX) - end_revision(notes_ref); -} - -static void init(int report_fd) -{ - fast_export_init(report_fd); - strbuf_init(&dump_ctx.uuid, 4096); - strbuf_init(&dump_ctx.url, 4096); - strbuf_init(&rev_ctx.log, 4096); - strbuf_init(&rev_ctx.author, 4096); - strbuf_init(&rev_ctx.note, 4096); - strbuf_init(&node_ctx.src, 4096); - strbuf_init(&node_ctx.dst, 4096); - reset_dump_ctx(NULL); - reset_rev_ctx(0); - reset_node_ctx(NULL); - return; -} - -int svndump_init(const char *filename) -{ - if (buffer_init(&input, filename)) - return error_errno("cannot open %s", filename ? filename : "NULL"); - init(REPORT_FILENO); - return 0; -} - -int svndump_init_fd(int in_fd, int back_fd) -{ - if(buffer_fdinit(&input, xdup(in_fd))) - return error_errno("cannot open fd %d", in_fd); - init(xdup(back_fd)); - return 0; -} - -void svndump_deinit(void) -{ - fast_export_deinit(); - reset_dump_ctx(NULL); - reset_rev_ctx(0); - reset_node_ctx(NULL); - strbuf_release(&rev_ctx.log); - strbuf_release(&rev_ctx.author); - strbuf_release(&rev_ctx.note); - strbuf_release(&node_ctx.src); - strbuf_release(&node_ctx.dst); - if (buffer_deinit(&input)) - fprintf(stderr, "Input error\n"); - if (ferror(stdout)) - fprintf(stderr, "Output error\n"); -} - -void svndump_reset(void) -{ - strbuf_release(&dump_ctx.uuid); - strbuf_release(&dump_ctx.url); - strbuf_release(&rev_ctx.log); - strbuf_release(&rev_ctx.author); -} |