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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "xstring.h"
#define COMMENT_CHAR '#'
struct branch {
string *name;
string *position;
string *age;
string *desc;
};
struct branch_ll {
struct branch *branch;
struct branch_ll *prev;
};
struct branch_ll *first_branch;
struct branch *current_branch;
void emit_timeline_html()
{
printf("\t<ul class=\"timeline\">\n");
struct branch_ll *ptr;
for(ptr = first_branch; ptr; ptr = ptr->prev) {
printf(
"\t<li>\n"
"\t\t<div class=\"direction-%s\">\n"
"\t\t\t<div class=\"flag-wrapper\">\n"
"\t\t\t\t<span class=\"flag\">%s</span>\n"
"\t\t\t\t<span class=\"time-wrapper\"><span class=\"time\">%s</span></span>\n"
"\t\t\t</div>\n"
"\t\t\t<div class=\"desc\">%s</div>\n"
"\t\t</div>\n"
"\t</li>\n", ptr->branch->position->s, ptr->branch->name->s,
ptr->branch->age->s, ptr->branch->desc->s);
}
printf("\t</ul>\n");
}
struct branch *add_branch(const char *name)
{
struct branch *br;
if(!first_branch) {
first_branch = malloc(sizeof(struct branch_ll));
first_branch->branch = malloc(sizeof(struct branch));
first_branch->prev = NULL;
br = first_branch->branch;
}
else {
struct branch_ll *ptr;
for(ptr = first_branch; ptr; ptr = ptr->prev) {
if(!ptr->prev) {
ptr->prev = malloc(sizeof(struct branch_ll));
ptr->prev->branch = malloc(sizeof(struct branch));
ptr->prev->prev = NULL;
br = ptr->prev->branch;
break;
}
}
}
br->name = string_alloc(name);
br->position = string_alloc("right");
br->age = string_alloc("No age");
br->desc = string_alloc("No description");
return br;
}
void handle_config_context(const char *name, const char *value)
{
if(strcmp(name, "branch.name") == 0) {
current_branch = add_branch(value);
}
else if(strcmp(name, "branch.position") == 0) {
if(!current_branch)
return;
if(strcmp(value, "right") != 0 && strcmp(value, "left") != 0)
return;
string_release(current_branch->position);
current_branch->position = string_alloc(value);
}
else if(strcmp(name, "branch.age") == 0) {
if(!current_branch)
return;
string_release(current_branch->age);
current_branch->age = string_alloc(value);
}
else if(strcmp(name, "branch.desc") == 0) {
if(!current_branch)
return;
string_release(current_branch->desc);
current_branch->desc = string_alloc(value);
}
}
void skip_line(FILE *f)
{
int c;
while( (c = fgetc(f)) && c != '\n' && c != EOF )
;
}
int read_config_line(FILE *f, string *name, string *value)
{
int c;
// skip comments and white spaces
for(;;) {
c = fgetc(f);
if(c == EOF)
return 1;
else if(c == COMMENT_CHAR)
skip_line(f);
else if(!isspace(c))
break;
}
// read variable name
while(c != '=') {
if(isspace(c) || c == EOF)
return 1;
string_addch(name, c);
c = fgetc(f);
}
// read variable value
c = fgetc(f);
while(c != '\n' && c != EOF) {
string_addch(value, c);
c = fgetc(f);
}
return 0;
}
int parse_config_file(const char *filename)
{
string *name = string_alloc(NULL);
string *value = string_alloc(NULL);
FILE *f;
f = fopen(filename, "r");
if(!f)
return 1;
while(read_config_line(f, name, value) == 0) {
// printf("name: %s; value: %s\n", name->s, value->s);
handle_config_context(name->s, value->s);
string_reset(name);
string_reset(value);
}
fclose(f);
string_release(name);
string_release(value);
return 0;
}
void usage()
{
printf("Usage: ctimeline [-h, --help] config_path\n"
"Copyright (C) 2021 Aleksandr D. Goncharov (Joursoir)\n"
"License: GNU GPL version 3 + X11 License\n"
"This is free software: you are free to change and redistribute it.\n"
"This program comes with ABSOLUTELY NO WARRANTY.\n");
}
int main(int argc, char **argv)
{
int result;
const char *config;
if(argc < 2) {
usage();
return 1;
}
if(strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-h") == 0) {
usage();
return 0;
}
config = argv[1];
result = parse_config_file(config);
if(result) {
perror(config);
return 1;
}
emit_timeline_html();
return 0;
}
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