From ffb48f64fec674c6dd923eb8b1eb3f743e05a8ba Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 18:28:14 -0800 Subject: auto import from //depot/cupcake/@135843 --- tools/ota/add-property-tag.c | 141 ------------------------------------------- 1 file changed, 141 deletions(-) delete mode 100644 tools/ota/add-property-tag.c (limited to 'tools/ota/add-property-tag.c') diff --git a/tools/ota/add-property-tag.c b/tools/ota/add-property-tag.c deleted file mode 100644 index 5277edd9c..000000000 --- a/tools/ota/add-property-tag.c +++ /dev/null @@ -1,141 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include -#include -#include -#include -#include -#include -#include - -/* - * Append a tag to a property value in a .prop file if it isn't already there. - * Normally used to modify build properties to record incremental updates. - */ - -// Return nonzero if the tag should be added to this line. -int should_tag(const char *line, const char *propname) { - const char *prop = strstr(line, propname); - if (prop == NULL) return 0; - - // Make sure this is actually the property name (not an accidental hit) - const char *ptr; - for (ptr = line; ptr < prop && isspace(*ptr); ++ptr) ; - if (ptr != prop) return 0; // Must be at the beginning of the line - - for (ptr += strlen(propname); *ptr != '\0' && isspace(*ptr); ++ptr) ; - return (*ptr == '='); // Must be followed by a '=' -} - -// Remove existing tags from the line, return the following number (if any) -int remove_tag(char *line, const char *tag) { - char *pos = strstr(line, tag); - if (pos == NULL) return 0; - - char *end; - int num = strtoul(pos + strlen(tag), &end, 10); - strcpy(pos, end); - return num; -} - -// Write line to output with the tag added, adding a number (if >0) -void write_tagged(FILE *out, const char *line, const char *tag, int number) { - const char *end = line + strlen(line); - while (end > line && isspace(end[-1])) --end; - if (number > 0) { - fprintf(out, "%.*s%s%d%s", end - line, line, tag, number, end); - } else { - fprintf(out, "%.*s%s%s", end - line, line, tag, end); - } -} - -int main(int argc, char **argv) { - const char *filename = "/system/build.prop"; - const char *propname = "ro.build.fingerprint"; - const char *tag = NULL; - int do_remove = 0, do_number = 0; - - int opt; - while ((opt = getopt(argc, argv, "f:p:rn")) != -1) { - switch (opt) { - case 'f': filename = optarg; break; - case 'p': propname = optarg; break; - case 'r': do_remove = 1; break; - case 'n': do_number = 1; break; - case '?': return 2; - } - } - - if (argc != optind + 1) { - fprintf(stderr, - "usage: add-property-tag [flags] tag-to-add\n" - "flags: -f /dir/file.prop (default /system/build.prop)\n" - " -p prop.name (default ro.build.fingerprint)\n" - " -r (if set, remove the tag rather than adding it)\n" - " -n (if set, add and increment a number after the tag)\n"); - return 2; - } - - tag = argv[optind]; - FILE *input = fopen(filename, "r"); - if (input == NULL) { - fprintf(stderr, "can't read %s: %s\n", filename, strerror(errno)); - return 1; - } - - char tmpname[PATH_MAX]; - snprintf(tmpname, sizeof(tmpname), "%s.tmp", filename); - FILE *output = fopen(tmpname, "w"); - if (output == NULL) { - fprintf(stderr, "can't write %s: %s\n", tmpname, strerror(errno)); - return 1; - } - - int found = 0; - char line[4096]; - while (fgets(line, sizeof(line), input)) { - if (!should_tag(line, propname)) { - fputs(line, output); // Pass through unmodified - } else { - found = 1; - int number = remove_tag(line, tag); - if (do_remove) { - fputs(line, output); // Remove the tag but don't re-add it - } else { - write_tagged(output, line, tag, number + do_number); - } - } - } - - fclose(input); - fclose(output); - - if (!found) { - fprintf(stderr, "property %s not found in %s\n", propname, filename); - remove(tmpname); - return 1; - } - - if (rename(tmpname, filename)) { - fprintf(stderr, "can't rename %s to %s: %s\n", - tmpname, filename, strerror(errno)); - remove(tmpname); - return 1; - } - - return 0; -} -- cgit v1.2.3