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/* confparser.h - Configuration file parser for ck ---------------------*- C -*-
*
* This file is part of ck, the config keeper
*
* -----------------------------------------------------------------------------
*
* Copyright (C) 2018 Anastasis Grammenos
* GPLv3 (see LICENCE for the full notice)
*
* -------------------------------------------------------------------------- */
#include "ckutil.h"
#include "confparser.h"
#include "ckerrlog.h"
ERRLOG(configfile);
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);
}
int read_next_line(char *line, FILE *f) {
char nextLine[STR_L];
if (fgets(nextLine, STR_L, f) == NULL) {
return -1;
}
strcpy(line, nextLine);
return 0;
}
ConfVar match_variables(char *line, char matched[]) {
if (line[0] == '#' || str_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;
}
void make_config_name(char * ret, const char *confPath) {
char tmp[STR_L];
strcpy(tmp, confPath);
strcat(tmp, CONFIG_NAME);
strcpy(ret, tmp);
}
ConfigParserResult parse(Conf *conf, UserOpt *opt) {
conf_values_initialize(conf);
FILE *confPtr;
char confName[STR_L];
make_config_name(confName, opt->confDir);
if ((confPtr = fopen(confName, "r")) == NULL) {
return CPR_NO_CONFIG_FILE;
}
int flag = 1;
char line[STR_L];
char matched[STR_L];
while (read_next_line(line, confPtr) == 0) {
if (strlen(line) > STR_L) {
return CPR_WRONG_CONFIG;
}
switch(match_variables(line, matched)) {
#define X(var, str, name) \
case CV_##var: \
conf->var = malloc(strlen(matched)+1); \
strcpy(conf->var, matched); \
if (!util_is_dir(matched)) { \
return CPR_WRONG_##var; \
} \
LOG("Found %s: %s", name, conf->var); \
break;
CONFIG_VARIABLES_TABLE
#undef X
case CV_NO_VAL_OR_COMMENT:
break;
default:
if (line[strlen(line) - 1] == '\n') {
ERR("Config error in line: %.*s", strlen(line) - 1, line);
}
else {
ERR("Config error in line: %s", line);
}
}
}
#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) {
LOG("Using '%s' for ck configuration directory", opt->confDir);
switch (parse(conf, opt)) {
#define X(var,str,name) \
case CPR_WRONG_##var: \
ERR("%s %s defined in config doesn't exist", name, conf->var); \
return 0; \
break;
CONFIG_VARIABLES_TABLE
#undef X
case CPR_NO_CONFIG_FILE:
ERR("The config file specified could not be found");
return 0;
case CPR_WRONG_CONFIG:
ERR("Config help\n");
case CPR_OK:
return 1;
}
}
void free_conf(Conf *conf) {
#define X(var,str,name) \
if (conf->var) { \
free(conf->var); \
}
CONFIG_VARIABLES_TABLE
#undef X
}
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