Fix coding style
- Use block for single statement ifs - Keep lines to reasonable length (current debate as to reasonable) - When functions return -1 for error test against 0 not -1 - Do not indent cases another level - Do not test against NULL and 0 explicitly - Use tabs for indentation, use spaces for alignment
This commit is contained in:
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66a7fb16fc
commit
ee5ec75621
@ -16,8 +16,7 @@
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snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/",
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bat, "/capacity");
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return (pscanf(path, "%i", &perc) == 1) ?
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bprintf("%d", perc) : NULL;
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return (pscanf(path, "%i", &perc) == 1) ? bprintf("%d", perc) : NULL;
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}
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const char *
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@ -58,9 +58,8 @@
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size = sizeof(freq);
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if (sysctl(mib, 2, &freq, &size, NULL, 0) == -1) {
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fprintf(stderr, "sysctl 'HW_CPUSPEED': %s\n",
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strerror(errno));
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if (sysctl(mib, 2, &freq, &size, NULL, 0) < 0) {
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fprintf(stderr, "sysctl 'HW_CPUSPEED': %s\n", strerror(errno));
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return NULL;
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}
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@ -82,7 +81,7 @@
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size = sizeof(a);
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memcpy(b, a, sizeof(b));
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if (sysctl(mib, 2, &a, &size, NULL, 0) == -1) {
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if (sysctl(mib, 2, &a, &size, NULL, 0) < 0) {
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fprintf(stderr, "sysctl 'KERN_CPTIME': %s\n", strerror(errno));
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return NULL;
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}
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@ -9,8 +9,9 @@ datetime(const char *fmt)
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time_t t;
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t = time(NULL);
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if (strftime(buf, sizeof(buf), fmt, localtime(&t)) == 0)
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if (!strftime(buf, sizeof(buf), fmt, localtime(&t))) {
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return NULL;
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}
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return buf;
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}
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@ -16,7 +16,8 @@ disk_free(const char *mnt)
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return NULL;
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}
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return bprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
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return bprintf("%f",
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(float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
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}
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const char *
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@ -45,7 +46,8 @@ disk_total(const char *mnt)
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return NULL;
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}
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return bprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
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return bprintf("%f",
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(float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
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}
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const char *
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@ -58,5 +60,7 @@ disk_used(const char *mnt)
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return NULL;
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}
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return bprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
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return bprintf("%f",
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(float)fs.f_bsize * ((float)fs.f_blocks -
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(float)fs.f_bfree) / 1024 / 1024 / 1024);
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}
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@ -9,7 +9,7 @@
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const char *
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hostname(void)
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{
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if (gethostname(buf, sizeof(buf)) == -1) {
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if (gethostname(buf, sizeof(buf)) < 0) {
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fprintf(stderr, "gethostbyname: %s\n", strerror(errno));
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return NULL;
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}
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@ -18,17 +18,19 @@ ipv4(const char *iface)
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int s;
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char host[NI_MAXHOST];
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if (getifaddrs(&ifaddr) == -1) {
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if (getifaddrs(&ifaddr) < 0) {
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fprintf(stderr, "getifaddrs: %s\n", strerror(errno));
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return NULL;
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}
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for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
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if (ifa->ifa_addr == NULL) {
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if (!ifa->ifa_addr) {
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continue;
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}
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s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
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if ((strcmp(ifa->ifa_name, iface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) {
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s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host,
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NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
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if (!strcmp(ifa->ifa_name, iface) &&
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(ifa->ifa_addr->sa_family == AF_INET)) {
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if (s != 0) {
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fprintf(stderr, "getnameinfo: %s\n", gai_strerror(s));
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return NULL;
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@ -49,17 +51,19 @@ ipv6(const char *iface)
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int s;
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char host[NI_MAXHOST];
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if (getifaddrs(&ifaddr) == -1) {
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if (getifaddrs(&ifaddr) < 0) {
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fprintf(stderr, "getifaddrs: %s\n", strerror(errno));
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return NULL;
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}
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for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
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if (ifa->ifa_addr == NULL) {
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if (!ifa->ifa_addr) {
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continue;
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}
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s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in6), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
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if ((strcmp(ifa->ifa_name, iface) == 0) && (ifa->ifa_addr->sa_family == AF_INET6)) {
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s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in6), host,
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NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
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if (!strcmp(ifa->ifa_name, iface) &&
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(ifa->ifa_addr->sa_family == AF_INET6)) {
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if (s != 0) {
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fprintf(stderr, "getnameinfo: %s\n", gai_strerror(s));
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return NULL;
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@ -13,14 +13,15 @@ num_files(const char *dir)
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DIR *fd;
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int num = 0;
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if ((fd = opendir(dir)) == NULL) {
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if (!(fd = opendir(dir))) {
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fprintf(stderr, "opendir '%s': %s\n", dir, strerror(errno));
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return NULL;
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}
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while ((dp = readdir(fd)) != NULL) {
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if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
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while ((dp = readdir(fd))) {
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if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) {
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continue; /* skip self and parent */
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}
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num++;
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}
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@ -17,10 +17,12 @@ run_command(const char *cmd)
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}
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p = fgets(buf, sizeof(buf) - 1, fp);
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pclose(fp);
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if (!p)
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if (!p) {
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return NULL;
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if ((p = strrchr(buf, '\n')) != NULL)
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}
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if ((p = strrchr(buf, '\n'))) {
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p[0] = '\0';
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}
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return buf[0] ? buf : NULL;
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}
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@ -13,13 +13,11 @@
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size_t bytes_read;
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if (!(fp = fopen(path, "r"))) {
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fprintf(stderr, "fopen '%s': %s\n", path,
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strerror(errno));
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fprintf(stderr, "fopen '%s': %s\n", path, strerror(errno));
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return 0;
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}
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if ((bytes_read = fread(buf, sizeof(char), bufsiz, fp)) == 0) {
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fprintf(stderr, "fread '%s': %s\n", path,
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strerror(errno));
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if (!(bytes_read = fread(buf, sizeof(char), bufsiz, fp))) {
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fprintf(stderr, "fread '%s': %s\n", path, strerror(errno));
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fclose(fp);
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return 0;
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}
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@ -40,12 +38,14 @@
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return NULL;
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}
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if ((match = strstr(buf, "SwapTotal")) == NULL)
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if (!(match = strstr(buf, "SwapTotal"))) {
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return NULL;
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}
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sscanf(match, "SwapTotal: %ld kB\n", &total);
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if ((match = strstr(buf, "SwapFree")) == NULL)
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if (!(match = strstr(buf, "SwapFree"))) {
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return NULL;
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}
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sscanf(match, "SwapFree: %ld kB\n", &free);
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return bprintf("%f", (float)free / 1024 / 1024);
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@ -61,16 +61,19 @@
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return NULL;
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}
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if ((match = strstr(buf, "SwapTotal")) == NULL)
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if (!(match = strstr(buf, "SwapTotal"))) {
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return NULL;
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}
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sscanf(match, "SwapTotal: %ld kB\n", &total);
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if ((match = strstr(buf, "SwapCached")) == NULL)
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if (!(match = strstr(buf, "SwapCached"))) {
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return NULL;
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}
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sscanf(match, "SwapCached: %ld kB\n", &cached);
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if ((match = strstr(buf, "SwapFree")) == NULL)
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if (!(match = strstr(buf, "SwapFree"))) {
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return NULL;
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}
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sscanf(match, "SwapFree: %ld kB\n", &free);
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return bprintf("%d", 100 * (total - free - cached) / total);
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@ -86,8 +89,9 @@
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return NULL;
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}
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if ((match = strstr(buf, "SwapTotal")) == NULL)
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if (!(match = strstr(buf, "SwapTotal"))) {
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return NULL;
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}
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sscanf(match, "SwapTotal: %ld kB\n", &total);
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return bprintf("%f", (float)total / 1024 / 1024);
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@ -103,16 +107,19 @@
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return NULL;
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}
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if ((match = strstr(buf, "SwapTotal")) == NULL)
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if (!(match = strstr(buf, "SwapTotal"))) {
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return NULL;
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}
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sscanf(match, "SwapTotal: %ld kB\n", &total);
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if ((match = strstr(buf, "SwapCached")) == NULL)
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if (!(match = strstr(buf, "SwapCached"))) {
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return NULL;
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}
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sscanf(match, "SwapCached: %ld kB\n", &cached);
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if ((match = strstr(buf, "SwapFree")) == NULL)
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if (!(match = strstr(buf, "SwapFree"))) {
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return NULL;
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}
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sscanf(match, "SwapFree: %ld kB\n", &free);
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return bprintf("%f", (float)(total - free - cached) / 1024 / 1024);
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@ -133,19 +140,23 @@
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int rnswap, nswap, i;
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nswap = swapctl(SWAP_NSWAP, 0, 0);
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if (nswap < 1)
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if (nswap < 1) {
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fprintf(stderr, "swaptctl 'SWAP_NSWAP': %s\n", strerror(errno));
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}
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fsep = sep = calloc(nswap, sizeof(*sep));
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if (sep == NULL)
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if (!sep) {
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fprintf(stderr, "calloc 'nswap': %s\n", strerror(errno));
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}
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rnswap = swapctl(SWAP_STATS, (void *)sep, nswap);
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if (rnswap < 0)
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if (rnswap < 0) {
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fprintf(stderr, "swapctl 'SWAP_STATA': %s\n", strerror(errno));
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}
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if (nswap != rnswap)
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if (nswap != rnswap) {
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fprintf(stderr, "SWAP_STATS != SWAP_NSWAP\n");
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}
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*total = 0;
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*used = 0;
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@ -35,7 +35,7 @@
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size = sizeof(temp);
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if (sysctl(mib, 5, &temp, &size, NULL, 0) == -1) {
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if (sysctl(mib, 5, &temp, &size, NULL, 0) < 0) {
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fprintf(stderr, "sysctl 'SENSOR_TEMP': %s\n",
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strerror(errno));
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return NULL;
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@ -49,7 +49,7 @@ format(int uptime)
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size = sizeof(boottime);
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if (sysctl(mib, 2, &boottime, &size, NULL, 0) == -1) {
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if (sysctl(mib, 2, &boottime, &size, NULL, 0) < 0) {
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fprintf(stderr, "sysctl 'KERN_BOOTTIME': %s\n", strerror(errno));
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return NULL;
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}
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@ -20,21 +20,22 @@ vol_perc(const char *card)
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int v, afd, devmask;
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char *vnames[] = SOUND_DEVICE_NAMES;
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afd = open(card, O_RDONLY | O_NONBLOCK);
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if (afd == -1) {
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if ((afd = open(card, O_RDONLY | O_NONBLOCK)) < 0) {
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fprintf(stderr, "open '%s': %s\n", card, strerror(errno));
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return NULL;
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}
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if (ioctl(afd, (int)SOUND_MIXER_READ_DEVMASK, &devmask) == -1) {
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fprintf(stderr, "ioctl 'SOUND_MIXER_READ_DEVMASK': %s\n", strerror(errno));
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if (ioctl(afd, (int)SOUND_MIXER_READ_DEVMASK, &devmask) < 0) {
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fprintf(stderr, "ioctl 'SOUND_MIXER_READ_DEVMASK': %s\n",
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strerror(errno));
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close(afd);
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return NULL;
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}
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for (i = 0; i < LEN(vnames); i++) {
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if (devmask & (1 << i) && !strcmp("vol", vnames[i])) {
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if (ioctl(afd, MIXER_READ(i), &v) == -1) {
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fprintf(stderr, "ioctl 'MIXER_READ(%d)': %s\n", i, strerror(errno));
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if (ioctl(afd, MIXER_READ(i), &v) < 0) {
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fprintf(stderr, "ioctl 'MIXER_READ(%d)': %s\n", i,
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strerror(errno));
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close(afd);
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return NULL;
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}
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@ -47,11 +47,13 @@
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break;
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}
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fclose(fp);
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if (i < 2 || !p)
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if (i < 2 || !p) {
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return NULL;
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}
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if ((datastart = strstr(buf, iface)) == NULL)
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if (!(datastart = strstr(buf, iface))) {
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return NULL;
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}
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datastart = (datastart+(strlen(iface)+1));
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sscanf(datastart + 1, " %*d %d %*d %*d\t\t %*d\t "
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@ -73,23 +75,23 @@
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wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
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snprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s", iface);
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if (sockfd == -1) {
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if (sockfd < 0) {
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fprintf(stderr, "socket 'AF_INET': %s\n",
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strerror(errno));
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return NULL;
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}
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wreq.u.essid.pointer = id;
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if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) {
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fprintf(stderr, "ioctl 'SIOCGIWESSID': %s\n",
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strerror(errno));
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if (ioctl(sockfd,SIOCGIWESSID, &wreq) < 0) {
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fprintf(stderr, "ioctl 'SIOCGIWESSID': %s\n", strerror(errno));
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close(sockfd);
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return NULL;
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}
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close(sockfd);
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if (strcmp(id, "") == 0)
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if (!strcmp(id, "")) {
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return NULL;
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}
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return id;
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}
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Reference in New Issue
Block a user