diff --git a/backly.c b/backly.c index 71bebf4..d03f12b 100644 --- a/backly.c +++ b/backly.c @@ -37,11 +37,11 @@ void printHelp() { printUsage(stdout); printf("Turn destdir into a clone of srcdir.\n\n"); - + printf("Options:\n"); printf(" --test\tRun in test mode.\n"); printf(" --help\tPrint this help and quit.\n\n"); - + printf("Report bugs to L. Bradley LaBoon \n"); printf("backly home page: \n"); } @@ -53,13 +53,13 @@ void removeMissing(char *src, int srcPrefix, char *dest, int destPrefix, int tes srcLen++; while (dest[destLen]) destLen++; - + DIR *destDir = opendir(dest); if (destDir == NULL) { fprintf(stderr, "Could not open %s: %s\n", dest, strerror(errno)); return; } - + // If the entire directory doesn't exist in src, remove it from dest DIR *srcDir = opendir(src); if (srcDir == NULL) { @@ -88,24 +88,24 @@ void removeMissing(char *src, int srcPrefix, char *dest, int destPrefix, int tes } } closedir(srcDir); - + // Look at each item in the folder struct dirent *item; while ((item = readdir(destDir)) != NULL) { // Ignore . and .. references if (strcmp(item->d_name, ".") == 0 || strcmp(item->d_name, "..") == 0) continue; - + int itemLen = 0; while (item->d_name[itemLen]) itemLen++; - + // +2 because a trailing slash might be added char itemSrc[srcLen + itemLen + 2]; char itemDest[destLen + itemLen + 2]; sprintf(itemSrc, "%s%s", src, item->d_name); sprintf(itemDest, "%s%s", dest, item->d_name); - + // Test if item is a directory int itemIsDir = 1; DIR *testDir = opendir(itemDest); @@ -113,7 +113,7 @@ void removeMissing(char *src, int srcPrefix, char *dest, int destPrefix, int tes itemIsDir = 0; else if (testDir != NULL) closedir(testDir); - + if (itemIsDir == 1) { // If it's a directory, append trailing slashes and recurse itemSrc[srcLen + itemLen] = '/'; @@ -150,7 +150,7 @@ void removeMissing(char *src, int srcPrefix, char *dest, int destPrefix, int tes } } } - + closedir(destDir); return; } @@ -162,13 +162,13 @@ void copyNew(char *src, int srcPrefix, char *dest, int destPrefix, int testMode) srcLen++; while(dest[destLen]) destLen++; - + DIR *srcDir = opendir(src); if (srcDir == NULL) { fprintf(stderr, "Could not open %s: %s\n", src, strerror(errno)); return; } - + // If the dest directory doesn't exist, create it DIR *destDir = opendir(dest); if (destDir == NULL) { @@ -195,22 +195,22 @@ void copyNew(char *src, int srcPrefix, char *dest, int destPrefix, int testMode) } } closedir(destDir); - + // Look at each item in the folder struct dirent *item; while ((item = readdir(srcDir)) != NULL) { if (strcmp(item->d_name, ".") == 0 || strcmp(item->d_name, "..") == 0) continue; - + int itemLen = 0; while (item->d_name[itemLen]) itemLen++; - + char itemSrc[srcLen + itemLen + 2]; char itemDest[destLen + itemLen + 2]; sprintf(itemSrc, "%s%s", src, item->d_name); sprintf(itemDest, "%s%s", dest, item->d_name); - + // Test if item is a directory int itemIsDir = 1; DIR *testDir = opendir(itemSrc); @@ -218,7 +218,7 @@ void copyNew(char *src, int srcPrefix, char *dest, int destPrefix, int testMode) itemIsDir = 0; else if (testDir != NULL) closedir(testDir); - + if (itemIsDir == 1) { // If it's a directory, recurse itemSrc[srcLen + itemLen] = '/'; @@ -239,7 +239,7 @@ void copyNew(char *src, int srcPrefix, char *dest, int destPrefix, int testMode) } } else { fclose(destFile); - + // Check if file size or modified time is different struct stat srcStat, destStat; if (stat(itemSrc, &srcStat) == -1) { @@ -250,13 +250,13 @@ void copyNew(char *src, int srcPrefix, char *dest, int destPrefix, int testMode) fprintf(stderr, "Could not stat %s\n", itemDest); continue; } - + if (srcStat.st_size != destStat.st_size) needToCopy = 1; else if (srcStat.st_mtime > destStat.st_mtime) needToCopy = 1; } - + // Only copy file if it doesn't exist or has changed if (needToCopy == 1) { printf("+ %s ", itemSrc + srcPrefix); @@ -276,9 +276,9 @@ void copyNew(char *src, int srcPrefix, char *dest, int destPrefix, int testMode) while (waitpid(pid, NULL, WNOHANG) == 0) { if (stat(itemDest, &destStat) == -1) continue; - + pDone = (double)destStat.st_size / (double)srcStat.st_size; - + for (int i = 0; i < numPrinted; i++) printf("\b \b"); numPrinted = printf("%.2lf%%", pDone * 100); @@ -295,7 +295,7 @@ void copyNew(char *src, int srcPrefix, char *dest, int destPrefix, int testMode) } } } - + closedir(srcDir); return; } @@ -304,7 +304,7 @@ int main(int argc, char **argv) { int srcArg = 0, destArg = 0; int testMode = 0; - + // Parse arguments for (int i = 1; i < argc; i++) { if (strcmp(argv[i], "--help") == 0) { @@ -319,33 +319,33 @@ int main(int argc, char **argv) destArg = i; } } - + if (srcArg == 0 || destArg == 0) { printUsage(stderr); fprintf(stderr, "Run 'backly --help' for more information.\n"); exit(1); } - + // Determine argument lengths int srcLen = 0, destLen = 0; while (argv[srcArg][srcLen]) srcLen++; while (argv[destArg][destLen]) destLen++; - + // Add trailing slashes to directory arguments if necessary char srcDir[srcLen + 2], destDir[destLen + 2]; - + if (argv[srcArg][srcLen - 1] == '/') sprintf(srcDir, "%s", argv[srcArg]); else sprintf(srcDir, "%s/", argv[srcArg]); - + if (argv[destArg][destLen - 1] == '/') sprintf(destDir, "%s", argv[destArg]); else sprintf(destDir, "%s/", argv[destArg]); - + // Check if directories exist and can be accessed DIR *dir = opendir(srcDir); if (dir == NULL) { @@ -353,19 +353,19 @@ int main(int argc, char **argv) exit(1); } closedir(dir); - + dir = opendir(destDir); if (dir == NULL) { fprintf(stderr, "Could not open destination: %s\n", strerror(errno)); exit(1); } closedir(dir); - + // Remove files from the destination that don't exist in the source removeMissing(srcDir, strlen(srcDir), destDir, strlen(destDir), testMode); - + // Copy new files and overwrite existing files if different copyNew(srcDir, strlen(srcDir), destDir, strlen(destDir), testMode); - + return 0; }