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Documentation.

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Neil 2021-06-11 23:34:54 -07:00
parent 5c9512ce27
commit 74619df7e5
2 changed files with 37 additions and 3 deletions
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31
readme.md
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@ -1 +1,30 @@
These are hard-coded CGI programmes for simple voting.
# vote\.c #
## Vote ##
* [Description](#user-content-preamble)
* [Struct, Union, and Enum Definitions](#user-content-tag): [vote](#user-content-tag-6b81ce15)
* [License](#user-content-license)
## <a id = "user-content-preamble" name = "user-content-preamble">Description</a> ##
These are hard\-coded CGI programmes for simple voting\. Compile with different headers to change the voting scheme\.
## <a id = "user-content-tag" name = "user-content-tag">Struct, Union, and Enum Definitions</a> ##
### <a id = "user-content-tag-6b81ce15" name = "user-content-tag-6b81ce15">vote</a> ###
<code>struct <strong>vote</strong> { const char *name; unsigned vote; const char token; };</code>
Vote structure\.
## <a id = "user-content-license" name = "user-content-license">License</a> ##
2007 Neil Edelman, distributed under the terms of the [GNU General Public License 3](https://opensource.org/licenses/GPL-3.0)\.

9
src/vote.c
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@ -1,4 +1,4 @@
/* @license 2007 Neil Edelman, distributed under the terms of the
/** @license 2007 Neil Edelman, distributed under the terms of the
[GNU General Public License 3](https://opensource.org/licenses/GPL-3.0).
@subtitle Vote
@ -11,6 +11,7 @@
#include <string.h> /* strstr() */
#include <time.h> /* time() */
/** Vote structure. */
struct vote {
const char *name;
unsigned vote;
@ -27,11 +28,13 @@ struct vote {
/* `votes` defined in header. */
static const size_t votes_size = sizeof votes / sizeof *votes;
/** @param[vote] Address of the variable that receives the `vote.vote` letter
or '\0'. */
static char *extract_vote(char *const vote) {
FILE *fp;
char *env, *var;
/* at least it will zero */
*vote = 0;
*vote = '\0';
/* check env vars */
if(!(env = getenv("REQUEST_METHOD")) || strcmp(env, "GET"))
return "Invalid request method.";
@ -109,6 +112,7 @@ static char *votes_write(void) {
return 0;
}
/** @param[vote] The `vote.vote` letter of the struct. */
static char *votes_inc(char vote) {
struct vote *votep;
/* search for a match for the first letter of vote as a token */
@ -163,6 +167,7 @@ static char *votes_html(void) {
return 0;
}
/** Reads and, possibly writes an incremented vote. */
int main(void) {
char vote, *error = 0;
if((error = votes_read()) ||