Fetch freq from cpuid, instead of asking Linux (using /proc). This finally removes udev dependency. However, the support of cpuid 0x16 is limited, so this may break cpufetch on some systems

src/udev.c

@@ -1,104 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <assert.h>
-
-#include "udev.h"
-
-#define _PATH_SYS_SYSTEM    "/sys/devices/system"
-#define _PATH_SYS_CPU       _PATH_SYS_SYSTEM"/cpu"
-#define _PATH_ONE_CPU       _PATH_SYS_CPU"/cpu0"
-
-#define _PATH_FREQUENCY     _PATH_ONE_CPU"/cpufreq"
-#define _PATH_FREQUENCY_MAX _PATH_FREQUENCY"/cpuinfo_max_freq"
-#define _PATH_FREQUENCY_MIN _PATH_FREQUENCY"/cpuinfo_min_freq"
-
-struct frequency {
-  long max;
-  long min;
-};
-
-// Parses buf which should be expressed in the way: xxxxK where 'x' are numbers and 'K' refers to kilobytes. 
-// Returns the size as a int in bytes
-int getSize(char* buf, int size) {
-  char* end = strstr (buf,"K");
-  if(end == NULL) {
-    printf("ERROR in getSize(strstr)\n");
-    return UNKNOWN;
-  }
-  *end = 0;
-  int cachsize = atoi(buf);
-  if(cachsize == 0) {
-    printf("ERROR in getSize(atoi)\n");
-    return UNKNOWN;
-  }
-  return cachsize;
-}
-
-// Returns CPU frequency in Hz
-long get_freq_from_file(char* path) {
-  FILE *file = fopen(path, "r");
-
-  if(file == NULL) {
-    //Doest not exist
-    return UNKNOWN;
-  }
-
-  //File exists, read it
-  int fd = fileno(file);
-  int bytes_read = 0;
-  int offset = 0;
-  int block = 1;
-  char* buf = malloc(sizeof(char)*DEFAULT_FILE_SIZE);
-  memset(buf, 0, sizeof(char)*DEFAULT_FILE_SIZE);
-
-  while (  (bytes_read = read(fd, buf+offset, block)) > 0 ) {
-    offset += bytes_read;
-  }
-
-  int ret = atoi(buf);
-  free(buf);
-  if(ret == 0) {
-    printf("error in get_freq_from_file\n");
-    return UNKNOWN;
-  }
-  fclose(file);
-  return (long)ret*1000;
-}
-
-long get_freq(struct frequency* freq) {
-  return freq->max;
-}
-
-char* get_str_freq(struct frequency* freq) {
-  //Max 3 digits and 3 for '(M/G)Hz' plus 1 for '\0'
-  unsigned int size = (4+3+1);
-  assert(strlen(STRING_UNKNOWN)+1 <= size);
-  char* string = malloc(sizeof(char)*size);
-  if(freq->max == UNKNOWN)
-    snprintf(string,strlen(STRING_UNKNOWN)+1,STRING_UNKNOWN);
-  else if(freq->max >= 1000000000)
-    snprintf(string,size,"%.2f"STRING_GIGAHERZ,(float)(freq->max)/1000000000);
-  else
-    snprintf(string,size,"%.2f"STRING_MEGAHERZ,(float)(freq->max)/1000000);
-  return string;
-}
-
-struct frequency* get_frequency_info() {
-  struct frequency* freq = malloc(sizeof(struct frequency));
-  
-  freq->max = get_freq_from_file(_PATH_FREQUENCY_MAX);
-  freq->min = get_freq_from_file(_PATH_FREQUENCY_MIN);
-  
-  return freq;
-}
-
-void free_freq_struct(struct frequency* freq) {
-  free(freq);
-}
-
-void debugFrequency(struct frequency* freq) {
-  printf("max f=%ldMhz\n",freq->max);
-  printf("min f=%ldMhz\n",freq->min);
-}