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#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "confparser.h"
const char * const CONFIG_NAME = "/ckrc";
void conf_values_initialize(Conf *c) {
c->SCRT_dir = NULL;
c->VC_dir = NULL;
}
int remove_newline(char buff[]) {
int initLength = strlen(buff);
for (int i = 0; i < initLength; i++) {
if (buff[i] == '\n') {
buff[i] = ' ';
}
}
return strlen(buff);
}
char* read_next_line(FILE *f) {
char nextLine[200];
char *line;
if (fgets(nextLine, 200, f) == NULL) {
return NULL;
}
line = malloc(remove_newline(nextLine));
strcpy(line, nextLine);
return line;
}
int is_empty(const char *s) {
while (*s != '\0') {
if (!isspace((unsigned char)*s))
return 0;
s++;
}
return 1;
}
ConfVar match_variables(char *line, char matched[]) {
if (line[0] == '#' || is_empty(line)) {
return CV_NO_VAL_OR_COMMENT;
}
#define X(var, str, name) \
if (sscanf(line, str, matched) == 1) { \
return CV_##var; \
}
CONFIG_VARIABLES_TABLE
#undef X
return -1;
}
int is_dir(char *path) {
DIR *dir;
dir = opendir(path);
if (!dir) {
return 0;
}
closedir(dir);
return 1;
}
char *make_config_name(char * confPath) {
char *db_path = strdup(confPath);
db_path = realloc(db_path, strlen(confPath) + strlen(CONFIG_NAME)+1);
strcat(db_path, CONFIG_NAME);
return db_path;
}
ConfigParserResult parse(Conf *conf, UserOpt *opt) {
conf_values_initialize(conf);
FILE *confPtr;
char *confName = make_config_name(opt->confDir);
if ((confPtr = fopen(confName, "r")) == NULL) {
free(confName);
return CPR_NO_CONFIG_FILE;
}
free(confName);
int flag = 1;
char *line = read_next_line(confPtr);
char matched[200];
while (line != NULL) {
switch(match_variables(line, matched)) {
#define X(var, str, name) \
case CV_##var: \
conf->var = malloc(strlen(matched)+1); \
strcpy(conf->var, matched); \
if (!is_dir(matched)) { \
free(conf->var); \
return CPR_WRONG_##var; \
} \
break;
CONFIG_VARIABLES_TABLE
#undef X
case CV_NO_VAL_OR_COMMENT:
break;
default:
printf("%s:\n%s\n", "Config error in line", line);
}
free(line);
line=read_next_line(confPtr);
}
#define X(var, str) \
if (conf->var == NULL) { \
flag = 0; \
CONFIG_VARIABLES_TABLE
#undef X
if (flag) {
return CPR_OK;
}
return CPR_NO_CONFIG_FILE;
}
int config_file_parse(Conf *conf, UserOpt *opt) {
switch (parse(conf, opt)) {
#define X(var,str,name) \
case CPR_WRONG_##var: \
printf("Config error:\n" \
"%s: %s\n" \
"defined in config does not exist\n", name, conf->var); \
return 0; \
break;
CONFIG_VARIABLES_TABLE
#undef X
case CPR_NO_CONFIG_FILE:
printf("The config file specified could not be found\n");
return 0;
case CPR_WRONG_CONFIG:
printf("Config help\n");
case CPR_OK:
return 1;
}
}
int init_create_config_file(UserOpt *opt) {
struct stat st = {0};
char tmp[200];
if (stat(opt->argv[0], &st) == -1) {
printf("Version control directory: %s\ndoes not exist.\n", opt->argv[0]);
return 1;
}
if (stat(opt->argv[1], &st) == -1) {
printf("Secret directory: %s\ndoes not exist.\n", opt->argv[1]);
return 1;
}
if (stat(opt->confDir, &st) == -1) {
mkdir(opt->confDir, 0755);
}
char *confName = make_config_name(opt->confDir);
FILE *f;
if ((f = fopen(confName, "w")) == NULL) {
free(confName);
return 1;
}
strcpy(tmp, "version_control_dir = ");
strcat(tmp, opt->argv[0]);
strcat(tmp, "\n");
fputs(tmp, f);
strcpy(tmp, "secret_dir = ");
strcat(tmp, opt->argv[1]);
strcat(tmp, "\n");
fputs(tmp, f);
fclose(f);
free(confName);
return 0;
}
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