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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "xstring.h"
#define APP_VERSION "1.0"
#define CONFIG_PATH "/etc/ctimelines"
#define COMMENT_CHAR '#'
#define INIT_CAPACITY_LIST 8
struct branch {
string *name;
int age_from;
int age_to;
string *desc;
};
struct branch_list {
struct branch *list;
int count;
int capacity;
};
struct branch_ll {
struct branch *branch;
struct branch_ll *prev;
};
struct branch_list branches = { NULL, 0, 0 };
struct branch *current_branch;
void sort_branches_by_age()
{
int i, j;
struct branch *i_ptr, *j_ptr;
struct branch tmp;
for(i = 0; i < branches.count; i++) {
i_ptr = &branches.list[i];
for(j = i+1; j < branches.count; j++) {
j_ptr = &branches.list[j];
if((j_ptr->age_from > i_ptr->age_from) ||
(j_ptr->age_to > i_ptr->age_to) ) {
tmp = *i_ptr;
*i_ptr = *j_ptr;
*j_ptr = tmp;
}
}
}
}
void emit_timeline_html()
{
int i;
struct branch *ptr;
printf("<ul class=\"timeline\">\n");
for(i = 0; i < branches.count; i++) {
ptr = &branches.list[i];
printf(
"<li>\n"
" <div class=\"direction-%s\">\n"
" <div class=\"flag-wrapper\">\n"
" <span class=\"flag\">%s</span>\n"
" <span class=\"time-wrapper\"><span class=\"time\">%d-%d</span></span>\n"
" </div>\n"
" <div class=\"desc\">%s</div>\n"
" </div>\n"
"</li>\n",
(i % 2) ? "left" : "right", ptr->name->s,
ptr->age_from, ptr->age_to, ptr->desc->s);
string_release(ptr->name);
string_release(ptr->desc);
}
printf("</ul>\n");
}
struct branch *add_branch(const char *name)
{
struct branch *br;
branches.count++;
if(branches.count > branches.capacity) {
if(branches.capacity == 0)
branches.capacity = INIT_CAPACITY_LIST;
else
branches.capacity *= 2;
branches.list = realloc(branches.list,
sizeof(struct branch) * branches.capacity);
}
br = &branches.list[branches.count-1];
br->name = string_alloc(name);
br->age_from = 0;
br->age_to = 0;
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.age_from") == 0) {
if(!current_branch)
return;
current_branch->age_from = atoi(value);
}
else if(strcmp(name, "branch.age_to") == 0) {
if(!current_branch)
return;
current_branch->age_to = atoi(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;
}
void parse_config_file(FILE *f)
{
string *name = string_alloc(NULL);
string *value = string_alloc(NULL);
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);
}
string_release(name);
string_release(value);
}
void usage()
{
printf("Usage: ctimeline [-h, --help | -i, --stdin]\n"
"Copyright (C) 2021 Aleksandr D. Goncharov (Joursoir)\n"
"Version: %s\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", APP_VERSION);
}
int main(int argc, char **argv)
{
FILE *config;
if(argc < 2) {
config = fopen(CONFIG_PATH, "r");
if(!config) {
perror(CONFIG_PATH);
return 1;
}
}
else if(strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-h") == 0) {
usage();
return 0;
}
else if(strcmp(argv[1], "--stdin") == 0 || strcmp(argv[1], "-i") == 0)
config = stdin;
else {
usage();
return 1;
}
parse_config_file(config);
fclose(config);
sort_branches_by_age();
printf("Content-type: text/html\n"
"\n"
"<html>\n"
"<head>\n"
" <title>ctimeline</title>\n"
" <link rel=\"stylesheet\" href=\"static/ctimeline.css\">\n"
"</head>\n"
""
"<body>\n"
"<br>\n");
emit_timeline_html();
printf("<br>\n"
"</body>\n"
"</html>\n");
free(branches.list);
return 0;
}
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