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modified parser to suit new config format

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This commit is contained in:
Alessandro Mauri 2020-07-25 17:51:00 +02:00
parent cc15646a15
commit 6613bd0707
1 changed files with 55 additions and 25 deletions

82
tests/parse.c
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@ -1,3 +1,6 @@
#define _POSIX_C_SOURCE 200809L
#define _DEFAULT_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
@ -6,6 +9,8 @@
#define ANSI_COLOR_RED "\x1b[31m"
#define ANSI_COLOR_RESET "\x1b[0m"
#define parse_failure(str, line) {fprintf(stderr, "Error in config file at line %d: " str "\n", line); exit(EXIT_FAILURE);}
int main(int argc, char const *argv[])
{
if (argc < 2)
@ -14,41 +19,66 @@ int main(int argc, char const *argv[])
fd = fopen(argv[1], "r");
if (!fd)
return -1;
for (;;) {
char *line = NULL;
for (int linenum = 1;; linenum++) {
int fuzzy = 0, tmp;
char *line = NULL, *keys = NULL, *command = NULL;
size_t linelen = 0;
if (getline(&line, &linelen, fd) == -1)
break;
if (linelen < 2)
continue;
printf(ANSI_COLOR_RED "%s\n" ANSI_COLOR_RESET, line);
/* remove white spaces */
int inquotes = 0;
int inapos = 0;
for (size_t i = 0; i < linelen; i++) {
if (line[i] == '"' && !inapos)
inquotes = !inquotes;
if (line[i] == '\'' && !inquotes)
inapos = !inapos;
printf(ANSI_COLOR_RED "Original line:\n%s\n" ANSI_COLOR_RESET, line);
if (isblank(line[i]) && !(inquotes || inapos)) {
memmove(&line[i], &line[i + 1], linelen - i);
i -= i ? 1 : 0;
}
}
if (line[0] == '#')
continue;
printf("%s\n", line);
// Remove leading spaces
while (isspace(line[0]) && linelen > 1)
memmove(line, &line[1], --linelen);
char *token = NULL;
token = strtok(line, "=");
if (token)
printf("%s\n", token);
token = strtok(NULL, "=");
if (token)
printf("%s\n", token);
// Skip comments and blank lines
if (line[0] == '#' || !line[0]) {
free(line);
continue;
}
printf("Valid line:\n%s\n", line);
// TODO: multiline commands, ending with "\\n"
// TODO: better error checks in order to remove unnecessary
// memmoves (line has to begin with cmment or "*-"), etc.
if (line[0] == '*')
fuzzy = 1;
memmove(line, &line[1], --linelen);
// Remove leading spaces
while (isspace(line[0]) && linelen > 1)
memmove(line, &line[1], --linelen);
keys = strtok(line, ":");
command = strtok(NULL, ":");
if (!command || !keys)
parse_failure("No command or keys specified", linenum);
// Remove whitespaces in keys
tmp = strlen(keys);
for (int i = 0; i < tmp; i++) {
if (isspace(keys[i])) {
memmove(&line[i], &line[i + 1], --tmp);
}
}
// Remove leading spaces in command
tmp = strlen(command);
while (isspace(command[0]) && tmp > 1)
memmove(command, &command[1], --tmp);
int x = 1;
char *k = strtok(keys, ",");
do {
printf("Key %d: %s\n", x++, k);
} while ((k = strtok(NULL, ",")));
printf("Command: %s\n", command);
}
return 0;
}