eddy/eddys_snippets
1
0
Fork 0
mirror of https://github.com/eddyem/eddys_snippets.git synced 2026-03-20 00:30:59 +03:00
Code Issues Packages Projects Releases Wiki Activity

add very small websocket example

Browse Source
This commit is contained in:
eddyem
2016-04-22 16:49:21 +03:00
parent ba10e91c35
commit 54f2b12d7d
9 changed files with 595 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

97
comments_before.c Normal file
View File

@@ -0,0 +1,97 @@
/*
* comments_before.c - put multiline comments before text in string they follow
*
*
* Copyright 2015 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include <stdio.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
typedef struct{
char *data;
size_t len;
} mmapbuf;
mmapbuf *My_mmap(char *filename){
int fd;
char *ptr;
size_t Mlen;
struct stat statbuf;
if(!filename) exit(-1);
if((fd = open(filename, O_RDONLY)) < 0) exit(-2);
if(fstat (fd, &statbuf) < 0) exit(-3);
Mlen = statbuf.st_size;
if((ptr = mmap (0, Mlen, PROT_READ, MAP_PRIVATE, fd, 0)) == MAP_FAILED)
exit(-4);
if(close(fd)) exit(-5);
mmapbuf *ret = calloc(1, sizeof(mmapbuf));
ret->data = ptr;
ret->len = Mlen;
return ret;
}
int main(int argc, char **argv){
mmapbuf *buf = My_mmap(argv[1]);
char *afile = strdup(buf->data), *eptr = afile + buf->len;
char *beforecom = NULL;
while(afile < eptr){
char *nl = strchr(afile, '\n');
if(!nl){
printf("%s\n", afile);
return 0;
}
*nl++ = 0;
char *commstart = strstr(afile, "/*");
if(commstart){
*commstart = 0;
free(beforecom);
beforecom = strdup(afile);
commstart += 2;
char *commend = NULL;
if(*commstart) commend = strstr(commstart, "*/");
if(commend){ // single comment
*commend = 0;
afile = commend + 2;
printf("/* %s */\n", commstart);
printf("%s%s\n", beforecom, afile);
afile = nl;
}else{ // multiline comment
printf("/*%s\n", commstart);
commend = strstr(nl, "*/");
if(!commend){
printf("%s*/\n", nl);
return -1;
}
*commend = 0;
afile = commend + 2;
if(*afile == '\n') ++afile;
printf("%s*/\n", nl);
}
}else{
printf("%s\n", afile);
afile = nl;
}
}
}