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-rw-r--r--packages/ipkg/files/1-pkg-parse--Optimize-inefficient-parsing.patch227
1 files changed, 227 insertions, 0 deletions
diff --git a/packages/ipkg/files/1-pkg-parse--Optimize-inefficient-parsing.patch b/packages/ipkg/files/1-pkg-parse--Optimize-inefficient-parsing.patch
new file mode 100644
index 0000000000..e7632b11d1
--- /dev/null
+++ b/packages/ipkg/files/1-pkg-parse--Optimize-inefficient-parsing.patch
@@ -0,0 +1,227 @@
+# HG changeset patch
+# User pfalcon@localhost
+# Date 1178334771 0
+# Node ID e4c99830ba0d55813e1774bd6d41039ca640d6a6
+# Parent d324eba24e79a0a86df7978f0511e4632a2732c7
+pkg_parse: Optimize inefficient parsing.
+
+Instead of expensively probing all fields in row, dispatch based on the
+first letter of the field. Tests show ~12 times reduction in number of calls
+to low-level parsing functions.
+
+diff -r d324eba24e79 -r e4c99830ba0d pkg_parse.c
+--- a/pkg_parse.c Fri May 04 23:22:33 2007 +0000
++++ b/pkg_parse.c Sat May 05 03:12:51 2007 +0000
+@@ -241,87 +241,116 @@ int pkg_parse_raw(pkg_t *pkg, char ***ra
+
+ for (lines = *raw; *lines; lines++) {
+ /* fprintf(stderr, "PARSING %s\n", *lines);*/
+- if(isGenericFieldType("Package:", *lines))
+- pkg->name = parseGenericFieldType("Package", *lines);
+- else if(isGenericFieldType("Architecture:", *lines))
+- pkg->architecture = parseGenericFieldType("Architecture", *lines);
+- else if(isGenericFieldType("Filename:", *lines))
+- pkg->filename = parseGenericFieldType("Filename", *lines);
+- else if(isGenericFieldType("Section:", *lines))
+- pkg->section = parseGenericFieldType("Section", *lines);
+- else if(isGenericFieldType("MD5sum:", *lines))
+- pkg->md5sum = parseGenericFieldType("MD5sum", *lines);
+- /* The old ipkg wrote out status files with the wrong case for MD5sum,
+- let's parse it either way */
+- else if(isGenericFieldType("MD5Sum:", *lines))
+- pkg->md5sum = parseGenericFieldType("MD5Sum", *lines);
+- else if(isGenericFieldType("Size:", *lines))
+- pkg->size = parseGenericFieldType("Size", *lines);
+- else if(isGenericFieldType("Source:", *lines))
+- pkg->source = parseGenericFieldType("Source", *lines);
+- else if(isGenericFieldType("Installed-Size:", *lines))
+- pkg->installed_size = parseGenericFieldType("Installed-Size", *lines);
+- else if(isGenericFieldType("Installed-Time:", *lines)) {
+- char *time_str = parseGenericFieldType("Installed-Time", *lines);
+- pkg->installed_time = strtoul(time_str, NULL, 0);
+- } else if(isGenericFieldType("Priority:", *lines))
+- pkg->priority = parseGenericFieldType("Priority", *lines);
+- else if(isGenericFieldType("Essential:", *lines)) {
+- char *essential_value;
+- essential_value = parseGenericFieldType("Essential", *lines);
+- if (strcmp(essential_value, "yes") == 0) {
+- pkg->essential = 1;
+- }
+- free(essential_value);
+- }
+- else if(isGenericFieldType("Status", *lines))
+- parseStatus(pkg, *lines);
+- else if(isGenericFieldType("Version", *lines))
+- parseVersion(pkg, *lines);
+- else if(isGenericFieldType("Maintainer", *lines))
+- pkg->maintainer = parseGenericFieldType("Maintainer", *lines);
+- else if(isGenericFieldType("Conffiles", *lines)){
+- parseConffiles(pkg, *lines);
+- reading_conffiles = 1;
+- }
+- else if(isGenericFieldType("Description", *lines)) {
+- pkg->description = parseGenericFieldType("Description", *lines);
+- reading_conffiles = 0;
+- reading_description = 1;
+- }
+-
+- else if(isGenericFieldType("Provides", *lines)){
++ switch (**lines) {
++ case 'P':
++ if(isGenericFieldType("Package:", *lines))
++ pkg->name = parseGenericFieldType("Package", *lines);
++ else if(isGenericFieldType("Priority:", *lines))
++ pkg->priority = parseGenericFieldType("Priority", *lines);
++ else if(isGenericFieldType("Provides", *lines)){
+ /* Here we add the internal_use to align the off by one problem between provides_str and provides */
+- provide = (char * ) malloc(strlen(*lines)+ 35 ); /* Preparing the space for the new ipkg_internal_use_only */
+- if ( alterProvidesLine(*lines,provide) ){
+- return EINVAL;
+- }
+- pkg->provides_str = parseDependsString( provide, &pkg->provides_count);
++ provide = (char * ) malloc(strlen(*lines)+ 35 ); /* Preparing the space for the new ipkg_internal_use_only */
++ if ( alterProvidesLine(*lines,provide) ){
++ return EINVAL;
++ }
++ pkg->provides_str = parseDependsString( provide, &pkg->provides_count);
+ /* Let's try to hack a bit here.
+ The idea is that if a package has no Provides, we would add one generic, to permit the check of dependencies
+ in alot of other places. We will remove it before writing down the status database */
+- pkg_false_provides=0;
+- free(provide);
+- }
+-
+- else if(isGenericFieldType("Depends", *lines))
+- pkg->depends_str = parseDependsString(*lines, &pkg->depends_count);
+- else if(isGenericFieldType("Pre-Depends", *lines))
+- pkg->pre_depends_str = parseDependsString(*lines, &pkg->pre_depends_count);
+- else if(isGenericFieldType("Recommends", *lines))
+- pkg->recommends_str = parseDependsString(*lines, &pkg->recommends_count);
+- else if(isGenericFieldType("Suggests", *lines))
+- pkg->suggests_str = parseDependsString(*lines, &pkg->suggests_count);
+- /* Abhaya: support for conflicts */
+- else if(isGenericFieldType("Conflicts", *lines))
+- pkg->conflicts_str = parseDependsString(*lines, &pkg->conflicts_count);
+- else if(isGenericFieldType("Replaces", *lines))
+- pkg->replaces_str = parseDependsString(*lines, &pkg->replaces_count);
+- else if(line_is_blank(*lines)) {
+- lines++;
+- break;
+- }
+- else if(**lines == ' '){
++ pkg_false_provides=0;
++ free(provide);
++ }
++ else if(isGenericFieldType("Pre-Depends", *lines))
++ pkg->pre_depends_str = parseDependsString(*lines, &pkg->pre_depends_count);
++ break;
++
++ case 'A':
++ if(isGenericFieldType("Architecture:", *lines))
++ pkg->architecture = parseGenericFieldType("Architecture", *lines);
++ break;
++
++ case 'F':
++ if(isGenericFieldType("Filename:", *lines))
++ pkg->filename = parseGenericFieldType("Filename", *lines);
++ break;
++
++ case 'S':
++ if(isGenericFieldType("Section:", *lines))
++ pkg->section = parseGenericFieldType("Section", *lines);
++ else if(isGenericFieldType("Size:", *lines))
++ pkg->size = parseGenericFieldType("Size", *lines);
++ else if(isGenericFieldType("Source:", *lines))
++ pkg->source = parseGenericFieldType("Source", *lines);
++ else if(isGenericFieldType("Status", *lines))
++ parseStatus(pkg, *lines);
++ else if(isGenericFieldType("Suggests", *lines))
++ pkg->suggests_str = parseDependsString(*lines, &pkg->suggests_count);
++ break;
++
++ case 'M':
++ if(isGenericFieldType("MD5sum:", *lines))
++ pkg->md5sum = parseGenericFieldType("MD5sum", *lines);
++ /* The old ipkg wrote out status files with the wrong case for MD5sum,
++ let's parse it either way */
++ else if(isGenericFieldType("MD5Sum:", *lines))
++ pkg->md5sum = parseGenericFieldType("MD5Sum", *lines);
++ else if(isGenericFieldType("Maintainer", *lines))
++ pkg->maintainer = parseGenericFieldType("Maintainer", *lines);
++ break;
++
++ case 'I':
++ if(isGenericFieldType("Installed-Size:", *lines))
++ pkg->installed_size = parseGenericFieldType("Installed-Size", *lines);
++ else if(isGenericFieldType("Installed-Time:", *lines)) {
++ char *time_str = parseGenericFieldType("Installed-Time", *lines);
++ pkg->installed_time = strtoul(time_str, NULL, 0);
++ }
++ break;
++
++ case 'E':
++ if(isGenericFieldType("Essential:", *lines)) {
++ char *essential_value;
++ essential_value = parseGenericFieldType("Essential", *lines);
++ if (strcmp(essential_value, "yes") == 0) {
++ pkg->essential = 1;
++ }
++ free(essential_value);
++ }
++ break;
++
++ case 'V':
++ if(isGenericFieldType("Version", *lines))
++ parseVersion(pkg, *lines);
++ break;
++
++ case 'C':
++ if(isGenericFieldType("Conffiles", *lines)){
++ parseConffiles(pkg, *lines);
++ reading_conffiles = 1;
++ }
++ else if(isGenericFieldType("Conflicts", *lines))
++ pkg->conflicts_str = parseDependsString(*lines, &pkg->conflicts_count);
++ break;
++
++ case 'D':
++ if(isGenericFieldType("Description", *lines)) {
++ pkg->description = parseGenericFieldType("Description", *lines);
++ reading_conffiles = 0;
++ reading_description = 1;
++ }
++ else if(isGenericFieldType("Depends", *lines))
++ pkg->depends_str = parseDependsString(*lines, &pkg->depends_count);
++ break;
++
++ case 'R':
++ if(isGenericFieldType("Recommends", *lines))
++ pkg->recommends_str = parseDependsString(*lines, &pkg->recommends_count);
++ else if(isGenericFieldType("Replaces", *lines))
++ pkg->replaces_str = parseDependsString(*lines, &pkg->replaces_count);
++
++ break;
++
++ case ' ':
+ if(reading_description) {
+ /* we already know it's not blank, so the rest of description */
+ pkg->description = realloc(pkg->description,
+@@ -332,8 +361,18 @@ int pkg_parse_raw(pkg_t *pkg, char ***ra
+ }
+ else if(reading_conffiles)
+ parseConffiles(pkg, *lines);
++
++ break;
++
++ default:
++ if(line_is_blank(*lines)) {
++ lines++;
++ goto out;
++ }
+ }
+ }
++out:;
++
+ *raw = lines;
+ /* If the ipk has not a Provides line, we insert our false line */
+ if ( pkg_false_provides==1)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 16:53:01 +0000