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Another copy of my dotfiles. Because I don't completely trust GitHub.
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dotfiles/suckless/paleofetch/paleofetch.c

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#pragma GCC diagnostic ignored "-Wunused-function"
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <sys/utsname.h>
#include <sys/sysinfo.h>
#include <sys/statvfs.h>
#include <pci/pci.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include "paleofetch.h"
#include "config.h"
#define BUF_SIZE 150
#define COUNT(x) (int)(sizeof x / sizeof *x)
#define halt_and_catch_fire(fmt, ...) \
do { \
if(status != 0) { \
fprintf(stderr, "paleofetch: " fmt "\n", ##__VA_ARGS__); \
exit(status); \
} \
} while(0)
struct conf {
char *label, *(*function)();
bool cached;
} config[] = CONFIG;
struct {
char *substring;
char *repl_str;
size_t length;
size_t repl_len;
} cpu_config[] = CPU_CONFIG, gpu_config[] = GPU_CONFIG;
Display *display;
struct statvfs file_stats;
struct utsname uname_info;
struct sysinfo my_sysinfo;
int title_length, status;
/*
* Replaces the first newline character with null terminator
*/
void remove_newline(char *s) {
while (*s != '\0' && *s != '\n')
s++;
*s = '\0';
}
/*
* Replaces the first newline character with null terminator
* and returns the length of the string
*/
int remove_newline_get_length(char *s) {
int i;
for (i = 0; *s != '\0' && *s != '\n'; s++, i++);
*s = '\0';
return i;
}
/*
* Cleans up repeated spaces in a string
* Trim spaces at the front of a string
*/
void truncate_spaces(char *str) {
int src = 0, dst = 0;
while(*(str + dst) == ' ') dst++;
while(*(str + dst) != '\0') {
*(str + src) = *(str + dst);
if(*(str + (dst++)) == ' ')
while(*(str + dst) == ' ') dst++;
src++;
}
*(str + src) = '\0';
}
/*
* Removes the first len characters of substring from str
* Assumes that strlen(substring) >= len
* Returns index where substring was found, or -1 if substring isn't found
*/
void remove_substring(char *str, const char* substring, size_t len) {
/* shift over the rest of the string to remove substring */
char *sub = strstr(str, substring);
if(sub == NULL) return;
int i = 0;
do *(sub+i) = *(sub+i+len);
while(*(sub+(++i)) != '\0');
}
/*
* Replaces the first sub_len characters of sub_str from str
* with the first repl_len characters of repl_str
*/
void replace_substring(char *str, const char *sub_str, const char *repl_str, size_t sub_len, size_t repl_len) {
char buffer[BUF_SIZE / 2];
char *start = strstr(str, sub_str);
if (start == NULL) return; // substring not found
/* check if we have enough space for new substring */
if (strlen(str) - sub_len + repl_len >= BUF_SIZE / 2) {
status = -1;
halt_and_catch_fire("new substring too long to replace");
}
strcpy(buffer, start + sub_len);
strncpy(start, repl_str, repl_len);
strcpy(start + repl_len, buffer);
}
static char *get_title() {
// reduce the maximum size for these, so that we don't over-fill the title string
char hostname[BUF_SIZE / 3];
status = gethostname(hostname, BUF_SIZE / 3);
halt_and_catch_fire("unable to retrieve host name");
char username[BUF_SIZE / 3];
status = getlogin_r(username, BUF_SIZE / 3);
halt_and_catch_fire("unable to retrieve login name");
title_length = strlen(hostname) + strlen(username) + 1;
char *title = malloc(BUF_SIZE);
snprintf(title, BUF_SIZE, COLOR"%s\e[0m@"COLOR"%s", username, hostname);
return title;
}
static char *get_bar() {
char *bar = malloc(BUF_SIZE);
char *s = bar;
for(int i = 0; i < title_length; i++) *(s++) = '-';
*s = '\0';
return bar;
}
static char *get_os() {
char *os = malloc(BUF_SIZE),
*name = malloc(BUF_SIZE),
*line = NULL;
size_t len;
FILE *os_release = fopen("/etc/os-release", "r");
if(os_release == NULL) {
status = -1;
halt_and_catch_fire("unable to open /etc/os-release");
}
while (getline(&line, &len, os_release) != -1) {
if (sscanf(line, "NAME=\"%[^\"]+", name) > 0) break;
}
free(line);
fclose(os_release);
snprintf(os, BUF_SIZE, "%s %s", name, uname_info.machine);
free(name);
return os;
}
static char *get_kernel() {
char *kernel = malloc(BUF_SIZE);
strncpy(kernel, uname_info.release, BUF_SIZE);
return kernel;
}
static char *get_host() {
char *host = malloc(BUF_SIZE), buffer[BUF_SIZE/2];
FILE *product_name, *product_version, *model;
if((product_name = fopen("/sys/devices/virtual/dmi/id/product_name", "r")) != NULL) {
if((product_version = fopen("/sys/devices/virtual/dmi/id/product_version", "r")) != NULL) {
fread(host, 1, BUF_SIZE/2, product_name);
remove_newline(host);
strcat(host, " ");
fread(buffer, 1, BUF_SIZE/2, product_version);
remove_newline(buffer);
strcat(host, buffer);
fclose(product_version);
} else {
fclose(product_name);
goto model_fallback;
}
fclose(product_name);
return host;
}
model_fallback:
if((model = fopen("/sys/firmware/devicetree/base/model", "r")) != NULL) {
fread(host, 1, BUF_SIZE, model);
remove_newline(host);
return host;
}
status = -1;
halt_and_catch_fire("unable to get host");
return NULL;
}
static char *get_uptime() {
long seconds = my_sysinfo.uptime;
struct { char *name; int secs; } units[] = {
{ "day", 60 * 60 * 24 },
{ "hour", 60 * 60 },
{ "min", 60 },
};
int n, len = 0;
char *uptime = malloc(BUF_SIZE);
for (int i = 0; i < 3; ++i ) {
if ((n = seconds / units[i].secs) || i == 2) /* always print minutes */
len += snprintf(uptime + len, BUF_SIZE - len,
"%d %s%s, ", n, units[i].name, n != 1 ? "s": "");
seconds %= units[i].secs;
}
// null-terminate at the trailing comma
uptime[len - 2] = '\0';
return uptime;
}
// returns "<Battery Percentage>% [<Charging | Discharging | Unknown>]"
// Credit: allisio - https://gist.github.com/allisio/1e850b93c81150124c2634716fbc4815
static char *get_battery_percentage() {
int battery_capacity;
FILE *capacity_file, *status_file;
char battery_status[12] = "Unknown";
if ((capacity_file = fopen(BATTERY_DIRECTORY "/capacity", "r")) == NULL) {
status = ENOENT;
halt_and_catch_fire("Unable to get battery information");
}
fscanf(capacity_file, "%d", &battery_capacity);
fclose(capacity_file);
if ((status_file = fopen(BATTERY_DIRECTORY "/status", "r")) != NULL) {
fscanf(status_file, "%s", battery_status);
fclose(status_file);
}
// max length of resulting string is 19
// one byte for padding incase there is a newline
// 100% [Discharging]
// 1234567890123456789
char *battery = malloc(20);
snprintf(battery, 20, "%d%% [%s]", battery_capacity, battery_status);
return battery;
}
static char *get_packages(const char* dirname, const char* pacname, int num_extraneous) {
int num_packages = 0;
DIR * dirp;
struct dirent *entry;
dirp = opendir(dirname);
if(dirp == NULL) {
status = -1;
halt_and_catch_fire("You may not have %s installed", dirname);
}
while((entry = readdir(dirp)) != NULL) {
if(entry->d_type == DT_DIR) num_packages++;
}
num_packages -= (2 + num_extraneous); // accounting for . and ..
status = closedir(dirp);
char *packages = malloc(BUF_SIZE);
snprintf(packages, BUF_SIZE, "%d (%s)", num_packages, pacname);
return packages;
}
static char *get_packages_pacman() {
return get_packages("/var/lib/pacman/local", "pacman", 0);
}
static char *get_shell() {
char *shell = malloc(BUF_SIZE);
char *shell_path = getenv("SHELL");
char *shell_name = strrchr(getenv("SHELL"), '/');
if(shell_name == NULL) /* if $SHELL doesn't have a '/' */
strncpy(shell, shell_path, BUF_SIZE); /* copy the whole thing over */
else
strncpy(shell, shell_name + 1, BUF_SIZE); /* o/w copy past the last '/' */
return shell;
}
static char *get_resolution() {
int screen, width, height;
char *resolution = malloc(BUF_SIZE);
if (display != NULL) {
screen = DefaultScreen(display);
width = DisplayWidth(display, screen);
height = DisplayHeight(display, screen);
snprintf(resolution, BUF_SIZE, "%dx%d", width, height);
} else {
DIR *dir;
struct dirent *entry;
char dir_name[] = "/sys/class/drm";
char modes_file_name[BUF_SIZE * 2];
FILE *modes;
char *line = NULL;
size_t len;
/* preload resolution with empty string, in case we cant find a resolution through parsing */
strncpy(resolution, "", BUF_SIZE);
dir = opendir(dir_name);
if (dir == NULL) {
status = -1;
halt_and_catch_fire("Could not open /sys/class/drm to determine resolution in tty mode.");
}
/* parse through all directories and look for a non empty modes file */
while ((entry = readdir(dir)) != NULL) {
if (entry->d_type == DT_LNK) {
snprintf(modes_file_name, BUF_SIZE * 2, "%s/%s/modes", dir_name, entry->d_name);
modes = fopen(modes_file_name, "r");
if (modes != NULL) {
if (getline(&line, &len, modes) != -1) {
strncpy(resolution, line, BUF_SIZE);
remove_newline(resolution);
free(line);
fclose(modes);
break;
}
fclose(modes);
}
}
}
closedir(dir);
}
return resolution;
}
static char *get_terminal() {
unsigned char *prop;
char *terminal = malloc(BUF_SIZE);
/* check if xserver is running or if we are running in a straight tty */
if (display != NULL) {
unsigned long _, // not unused, but we don't need the results
window = RootWindow(display, XDefaultScreen(display));
Atom a,
active = XInternAtom(display, "_NET_ACTIVE_WINDOW", True),
class = XInternAtom(display, "WM_CLASS", True);
#define GetProp(property) \
XGetWindowProperty(display, window, property, 0, 64, 0, 0, &a, (int *)&_, &_, &_, &prop);
GetProp(active);
window = (prop[3] << 24) + (prop[2] << 16) + (prop[1] << 8) + prop[0];
free(prop);
if(!window) goto terminal_fallback;
GetProp(class);
#undef GetProp
snprintf(terminal, BUF_SIZE, "%s", prop);
free(prop);
} else {
terminal_fallback:
strncpy(terminal, getenv("TERM"), BUF_SIZE); /* fallback to old method */
/* in tty, $TERM is simply returned as "linux"; in this case get actual tty name */
if (strcmp(terminal, "linux") == 0) {
strncpy(terminal, ttyname(STDIN_FILENO), BUF_SIZE);
}
}
return terminal;
}
static char *get_cpu() {
FILE *cpuinfo = fopen("/proc/cpuinfo", "r"); /* read from cpu info */
if(cpuinfo == NULL) {
status = -1;
halt_and_catch_fire("Unable to open cpuinfo");
}
char *cpu_model = malloc(BUF_SIZE / 2);
char *line = NULL;
size_t len; /* unused */
int num_cores = 0, cpu_freq, prec = 3;
double freq;
char freq_unit[] = "GHz";
/* read the model name into cpu_model, and increment num_cores every time model name is found */
while(getline(&line, &len, cpuinfo) != -1) {
num_cores += sscanf(line, "model name : %[^\n@]", cpu_model);
}
free(line);
fclose(cpuinfo);
FILE *cpufreq = fopen("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq", "r");
line = NULL;
if (cpufreq != NULL) {
if (getline(&line, &len, cpufreq) != -1) {
sscanf(line, "%d", &cpu_freq);
cpu_freq /= 1000; // convert kHz to MHz
} else {
fclose(cpufreq);
free(line);
goto cpufreq_fallback;
}
} else {
cpufreq_fallback:
cpufreq = fopen("/proc/cpuinfo", "r"); /* read from cpu info */
if (cpufreq == NULL) {
status = -1;
halt_and_catch_fire("Unable to open cpuinfo");
}
while (getline(&line, &len, cpufreq) != -1) {
if (sscanf(line, "cpu MHz : %lf", &freq) > 0) break;
}
cpu_freq = (int) freq;
}
free(line);
fclose(cpufreq);
if (cpu_freq < 1000) {
freq = (double) cpu_freq;
freq_unit[0] = 'M'; // make MHz from GHz
prec = 0; // show frequency as integer value
} else {
freq = cpu_freq / 1000.0; // convert MHz to GHz and cast to double
while (cpu_freq % 10 == 0) {
--prec;
cpu_freq /= 10;
}
if (prec == 0) prec = 1; // we don't want zero decimal places
}
/* remove unneeded information */
for (int i = 0; i < COUNT(cpu_config); ++i) {
if (cpu_config[i].repl_str == NULL) {
remove_substring(cpu_model, cpu_config[i].substring, cpu_config[i].length);
} else {
replace_substring(cpu_model, cpu_config[i].substring, cpu_config[i].repl_str, cpu_config[i].length, cpu_config[i].repl_len);
}
}
char *cpu = malloc(BUF_SIZE);
snprintf(cpu, BUF_SIZE, "%s (%d) @ %.*f%s", cpu_model, num_cores, prec, freq, freq_unit);
free(cpu_model);
truncate_spaces(cpu);
if(num_cores == 0)
*cpu = '\0';
return cpu;
}
static char *find_gpu(int index) {
// inspired by https://github.com/pciutils/pciutils/edit/master/example.c
/* it seems that pci_lookup_name needs to be given a buffer, but I can't for the life of my figure out what its for */
char buffer[BUF_SIZE], *device_class, *gpu = malloc(BUF_SIZE);
struct pci_access *pacc;
struct pci_dev *dev;
int gpu_index = 0;
bool found = false;
pacc = pci_alloc();
pci_init(pacc);
pci_scan_bus(pacc);
dev = pacc->devices;
while(dev != NULL) {
pci_fill_info(dev, PCI_FILL_IDENT);
device_class = pci_lookup_name(pacc, buffer, sizeof(buffer), PCI_LOOKUP_CLASS, dev->device_class);
if(strcmp("VGA compatible controller", device_class) == 0 || strcmp("3D controller", device_class) == 0) {
strncpy(gpu, pci_lookup_name(pacc, buffer, sizeof(buffer), PCI_LOOKUP_DEVICE | PCI_LOOKUP_VENDOR, dev->vendor_id, dev->device_id), BUF_SIZE);
if(gpu_index == index) {
found = true;
break;
} else {
gpu_index++;
}
}
dev = dev->next;
}
if (found == false) *gpu = '\0'; // empty string, so it will not be printed
pci_cleanup(pacc);
/* remove unneeded information */
for (int i = 0; i < COUNT(gpu_config); ++i) {
if (gpu_config[i].repl_str == NULL) {
remove_substring(gpu, gpu_config[i].substring, gpu_config[i].length);
} else {
replace_substring(gpu, gpu_config[i].substring, gpu_config[i].repl_str, gpu_config[i].length, gpu_config[i].repl_len);
}
}
truncate_spaces(gpu);
return gpu;
}
static char *get_gpu1() {
return find_gpu(0);
}
static char *get_gpu2() {
return find_gpu(1);
}
static char *get_memory() {
int total_memory, used_memory;
int total, shared, memfree, buffers, cached, reclaimable;
FILE *meminfo = fopen("/proc/meminfo", "r"); /* get infomation from meminfo */
if(meminfo == NULL) {
status = -1;
halt_and_catch_fire("Unable to open meminfo");
}
/* We parse through all lines of meminfo and scan for the information we need */
char *line = NULL; // allocation handled automatically by getline()
size_t len; /* unused */
/* parse until EOF */
while (getline(&line, &len, meminfo) != -1) {
/* if sscanf doesn't find a match, pointer is untouched */
sscanf(line, "MemTotal: %d", &total);
sscanf(line, "Shmem: %d", &shared);
sscanf(line, "MemFree: %d", &memfree);
sscanf(line, "Buffers: %d", &buffers);
sscanf(line, "Cached: %d", &cached);
sscanf(line, "SReclaimable: %d", &reclaimable);
}
free(line);
fclose(meminfo);
/* use same calculation as neofetch */
used_memory = (total + shared - memfree - buffers - cached - reclaimable) / 1024;
total_memory = total / 1024;
int percentage = (int) (100 * (used_memory / (double) total_memory));
char *memory = malloc(BUF_SIZE);
snprintf(memory, BUF_SIZE, "%dMiB / %dMiB (%d%%)", used_memory, total_memory, percentage);
return memory;
}
static char *get_disk_usage(const char *folder) {
char *disk_usage = malloc(BUF_SIZE);
long total, used, free;
int percentage;
status = statvfs(folder, &file_stats);
halt_and_catch_fire("Error getting disk usage for %s", folder);
total = file_stats.f_blocks * file_stats.f_frsize;
free = file_stats.f_bfree * file_stats.f_frsize;
used = total - free;
percentage = (used / (double) total) * 100;
#define TO_GB(A) ((A) / (1024.0 * 1024 * 1024))
snprintf(disk_usage, BUF_SIZE, "%.1fGiB / %.1fGiB (%d%%)", TO_GB(used), TO_GB(total), percentage);
#undef TO_GB
return disk_usage;
}
static char *get_disk_usage_root() {
return get_disk_usage("/");
}
static char *get_disk_usage_home() {
return get_disk_usage("/home");
}
static char *get_colors1() {
char *colors1 = malloc(BUF_SIZE);
char *s = colors1;
for(int i = 0; i < 8; i++) {
sprintf(s, "\e[4%dm ", i);
s += 8;
}
snprintf(s, 5, "\e[0m");
return colors1;
}
static char *get_colors2() {
char *colors2 = malloc(BUF_SIZE);
char *s = colors2;
for(int i = 8; i < 16; i++) {
sprintf(s, "\e[48;5;%dm ", i);
s += 12 + (i >= 10 ? 1 : 0);
}
snprintf(s, 5, "\e[0m");
return colors2;
}
static char *spacer() {
return calloc(1, 1); // freeable, null-terminated string of length 1
}
char *get_cache_file() {
char *cache_file = malloc(BUF_SIZE);
char *env = getenv("XDG_CACHE_HOME");
if(env == NULL)
snprintf(cache_file, BUF_SIZE, "%s/.cache/paleofetch", getenv("HOME"));
else
snprintf(cache_file, BUF_SIZE, "%s/paleofetch", env);
return cache_file;
}
/* This isn't especially robust, but as long as we're the only one writing
* to our cache file, the format is simple, effective, and fast. One way
* we might get in trouble would be if the user decided not to have any
* sort of sigil (like ':') after their labels. */
char *search_cache(char *cache_data, char *label) {
char *start = strstr(cache_data, label);
if(start == NULL) {
status = ENODATA;
halt_and_catch_fire("cache miss on key '%s'; need to --recache?", label);
}
start += strlen(label);
char *end = strchr(start, ';');
char *buf = calloc(1, BUF_SIZE);
// skip past the '=' and stop just before the ';'
strncpy(buf, start + 1, end - start - 1);
return buf;
}
char *get_value(struct conf c, int read_cache, char *cache_data) {
char *value;
// If the user's config specifies that this value should be cached
if(c.cached && read_cache) // and we have a cache to read from
value = search_cache(cache_data, c.label); // grab it from the cache
else {
// Otherwise, call the associated function to get the value
value = c.function();
if(c.cached) { // and append it to our cache data if appropriate
char *buf = malloc(BUF_SIZE);
sprintf(buf, "%s=%s;", c.label, value);
strcat(cache_data, buf);
free(buf);
}
}
return value;
}
int main(int argc, char *argv[]) {
char *cache, *cache_data = NULL;
FILE *cache_file;
int read_cache;
status = uname(&uname_info);
halt_and_catch_fire("uname failed");
status = sysinfo(&my_sysinfo);
halt_and_catch_fire("sysinfo failed");
display = XOpenDisplay(NULL);
cache = get_cache_file();
if(argc == 2 && strcmp(argv[1], "--recache") == 0)
read_cache = 0;
else {
cache_file = fopen(cache, "r");
read_cache = cache_file != NULL;
}
if(!read_cache)
cache_data = calloc(4, BUF_SIZE); // should be enough
else {
size_t len; /* unused */
getline(&cache_data, &len, cache_file);
fclose(cache_file); // We just need the first (and only) line.
}
int offset = 0;
for (int i = 0; i < COUNT(LOGO); i++) {
// If we've run out of information to show...
if(i >= COUNT(config) - offset) // just print the next line of the logo
printf(COLOR"%s\n", LOGO[i]);
else {
// Otherwise, we've got a bit of work to do.
char *label = config[i+offset].label,
*value = get_value(config[i+offset], read_cache, cache_data);
if (strcmp(value, "") != 0) { // check if value is an empty string
printf(COLOR"%s%s\e[0m%s\n", LOGO[i], label, value); // just print if not empty
} else {
if (strcmp(label, "") != 0) { // check if label is empty, otherwise it's a spacer
++offset; // print next line of information
free(value); // free memory allocated for empty value
label = config[i+offset].label; // read new label and value
value = get_value(config[i+offset], read_cache, cache_data);
}
printf(COLOR"%s%s\e[0m%s\n", LOGO[i], label, value);
}
free(value);
}
}
puts("\e[0m");
/* Write out our cache data (if we have any). */
if(!read_cache && *cache_data) {
cache_file = fopen(cache, "w");
fprintf(cache_file, "%s", cache_data);
fclose(cache_file);
}
free(cache);
free(cache_data);
if(display != NULL) {
XCloseDisplay(display);
}
return 0;
}