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ltsview.c
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ltsview.c
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define BUF_MAX 10240
#define KEYS_MAX 100
#define VERSION "0.0.2"
struct item {
char *key;
char *value;
};
void usage();
void version();
void parse_item(struct item *item, char *key_value);
int in_array(char *s, char **strings);
int main(int argc, char **argv)
{
if (argc >= 2 && (strcmp(argv[1],"--help") == 0 || strcmp(argv[1],"-h") == 0)) {
usage();
return(1);
}
if (argc >= 2 && (strcmp(argv[1],"--version") == 0 || strcmp(argv[1],"-v") == 0)) {
version();
return(1);
}
char *keys[KEYS_MAX];
memset(keys, 0, sizeof(keys));
int i;
char *concate_keys;
/* parse -k options */
if (argc >= 2 && strcmp(argv[1],"-k") == 0) {
if (argc == 2) {
fprintf(stderr, "no argument for -k option\n");
exit(1);
}
concate_keys = argv[2];
keys[0] = strtok(concate_keys, ",");
if (keys[0] != NULL) {
i = 1;
while((keys[i] = strtok(NULL, ",")) != NULL) {
i++;
}
}
}
char buf[BUF_MAX];
struct item items[KEYS_MAX];
char *tab;
char *tmp;
char *newline;
while (fgets(buf, BUF_MAX, stdin) != NULL) {
printf("=========\n");
tmp = buf;
i = 0;
memset(items,0, sizeof(items)); // is this right?
while ((tab = strchr(tmp, '\t')) != NULL ) {
*tab = '\0';
parse_item(&items[i++], tmp);
tmp = tab + 1;
}
if (i != 0) {
newline = strchr(tmp, '\n');
*newline = '\0';
}
parse_item(&items[i], tmp);
for (i = 0;items[i].key != NULL;i++) {
if (keys[0] != NULL && ! in_array(items[i].key, keys)) {
continue;
}
printf("%s: %s\n", items[i].key, items[i].value);
}
}
return 0;
}
void usage() {
printf("Usage: ltsview [OPTIONS]\n");
printf("viewer of ltsv log\n");
printf("\n");
printf("-k <key,..> select keys\n");
}
void version() {
printf("ltsview %s\n", VERSION);
printf("License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n");
printf("This is free software: you are free to change and redistribute it.\n");
printf("There is NO WARRANTY, to the extent permitted by law.\n\n");
printf("Written by DQNEO\n");
}
void parse_item(struct item *item, char *key_value)
{
char *colon;
colon = strchr(key_value, ':');
if (colon == NULL) {
fprintf(stderr, "invalid format:%s\n", key_value);
return;
}
*colon = '\0';
item->key = key_value;
item->value = colon + 1;
}
int in_array(char *s, char **strings)
{
int j;
for (j = 0; strings[j] != NULL; j++) {
if (strcmp(s, strings[j]) == 0) {
return 1; // found
}
}
return 0; // not found
}