mirror of
https://github.com/eddyem/eddys_snippets.git
synced 2026-03-20 08:41:02 +03:00
Added image view module
This commit is contained in:
eddyem
195
image_view_module/macros.c
Normal file
195
image_view_module/macros.c
Normal file
@@ -0,0 +1,195 @@
|
||||
/*
|
||||
* usefull_macros.h - a set of usefull functions: memory, color etc
|
||||
*
|
||||
* Copyright 2013 Edward V. Emelianoff <eddy@sao.ru>
|
||||
*
|
||||
* 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 "macros.h"
|
||||
|
||||
|
||||
#include <sys/time.h>
|
||||
/**
|
||||
* function for different purposes that need to know time intervals
|
||||
* @return double value: time in seconds
|
||||
*/
|
||||
double dtime(){
|
||||
double t;
|
||||
struct timeval tv;
|
||||
gettimeofday(&tv, NULL);
|
||||
t = tv.tv_sec + ((double)tv.tv_usec)/1e6;
|
||||
return t;
|
||||
}
|
||||
|
||||
/******************************************************************************\
|
||||
* Coloured terminal
|
||||
\******************************************************************************/
|
||||
int globErr = 0; // errno for WARN/ERR
|
||||
|
||||
// pointers to coloured output printf
|
||||
int (*red)(const char *fmt, ...);
|
||||
int (*green)(const char *fmt, ...);
|
||||
int (*_WARN)(const char *fmt, ...);
|
||||
|
||||
/*
|
||||
* format red / green messages
|
||||
* name: r_pr_, g_pr_
|
||||
* @param fmt ... - printf-like format
|
||||
* @return number of printed symbols
|
||||
*/
|
||||
int r_pr_(const char *fmt, ...){
|
||||
va_list ar; int i;
|
||||
printf(RED);
|
||||
va_start(ar, fmt);
|
||||
i = vprintf(fmt, ar);
|
||||
va_end(ar);
|
||||
printf(OLDCOLOR);
|
||||
return i;
|
||||
}
|
||||
int g_pr_(const char *fmt, ...){
|
||||
va_list ar; int i;
|
||||
printf(GREEN);
|
||||
va_start(ar, fmt);
|
||||
i = vprintf(fmt, ar);
|
||||
va_end(ar);
|
||||
printf(OLDCOLOR);
|
||||
return i;
|
||||
}
|
||||
/*
|
||||
* print red error/warning messages (if output is a tty)
|
||||
* @param fmt ... - printf-like format
|
||||
* @return number of printed symbols
|
||||
*/
|
||||
int r_WARN(const char *fmt, ...){
|
||||
va_list ar; int i = 1;
|
||||
fprintf(stderr, RED);
|
||||
va_start(ar, fmt);
|
||||
if(globErr){
|
||||
errno = globErr;
|
||||
vwarn(fmt, ar);
|
||||
errno = 0;
|
||||
globErr = 0;
|
||||
}else
|
||||
i = vfprintf(stderr, fmt, ar);
|
||||
va_end(ar);
|
||||
i++;
|
||||
fprintf(stderr, OLDCOLOR "\n");
|
||||
return i;
|
||||
}
|
||||
|
||||
const char stars[] = "****************************************";
|
||||
/*
|
||||
* notty variants of coloured printf
|
||||
* name: s_WARN, r_pr_notty
|
||||
* @param fmt ... - printf-like format
|
||||
* @return number of printed symbols
|
||||
*/
|
||||
int s_WARN(const char *fmt, ...){
|
||||
va_list ar; int i;
|
||||
i = fprintf(stderr, "\n%s\n", stars);
|
||||
va_start(ar, fmt);
|
||||
if(globErr){
|
||||
errno = globErr;
|
||||
vwarn(fmt, ar);
|
||||
errno = 0;
|
||||
globErr = 0;
|
||||
}else
|
||||
i = +vfprintf(stderr, fmt, ar);
|
||||
va_end(ar);
|
||||
i += fprintf(stderr, "\n%s\n", stars);
|
||||
i += fprintf(stderr, "\n");
|
||||
return i;
|
||||
}
|
||||
int r_pr_notty(const char *fmt, ...){
|
||||
va_list ar; int i;
|
||||
i = printf("\n%s\n", stars);
|
||||
va_start(ar, fmt);
|
||||
i += vprintf(fmt, ar);
|
||||
va_end(ar);
|
||||
i += printf("\n%s\n", stars);
|
||||
return i;
|
||||
}
|
||||
|
||||
/**
|
||||
* Run this function in the beginning of main() to setup locale & coloured output
|
||||
*/
|
||||
void initial_setup(){
|
||||
// setup coloured output
|
||||
if(isatty(STDOUT_FILENO)){ // make color output in tty
|
||||
red = r_pr_; green = g_pr_;
|
||||
}else{ // no colors in case of pipe
|
||||
red = r_pr_notty; green = printf;
|
||||
}
|
||||
if(isatty(STDERR_FILENO)) _WARN = r_WARN;
|
||||
else _WARN = s_WARN;
|
||||
// Setup locale
|
||||
setlocale(LC_ALL, "");
|
||||
setlocale(LC_NUMERIC, "C");
|
||||
#ifndef NOGETTEXT
|
||||
bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
|
||||
textdomain(GETTEXT_PACKAGE);
|
||||
#endif
|
||||
}
|
||||
|
||||
/******************************************************************************\
|
||||
* Memory
|
||||
\******************************************************************************/
|
||||
/*
|
||||
* safe memory allocation for macro ALLOC
|
||||
* @param N - number of elements to allocate
|
||||
* @param S - size of single element (typically sizeof)
|
||||
* @return pointer to allocated memory area
|
||||
*/
|
||||
void *my_alloc(size_t N, size_t S){
|
||||
void *p = calloc(N, S);
|
||||
if(!p) ERR("malloc");
|
||||
//assert(p);
|
||||
return p;
|
||||
}
|
||||
|
||||
/**
|
||||
* Mmap file to a memory area
|
||||
*
|
||||
* @param filename (i) - name of file to mmap
|
||||
* @return stuct with mmap'ed file or die
|
||||
*/
|
||||
mmapbuf *My_mmap(char *filename){
|
||||
int fd;
|
||||
char *ptr;
|
||||
size_t Mlen;
|
||||
struct stat statbuf;
|
||||
if(!filename) ERRX(_("No filename given!"));
|
||||
if((fd = open(filename, O_RDONLY)) < 0)
|
||||
ERR(_("Can't open %s for reading"), filename);
|
||||
if(fstat (fd, &statbuf) < 0)
|
||||
ERR(_("Can't stat %s"), filename);
|
||||
Mlen = statbuf.st_size;
|
||||
if((ptr = mmap (0, Mlen, PROT_READ, MAP_PRIVATE, fd, 0)) == MAP_FAILED)
|
||||
ERR(_("Mmap error for input"));
|
||||
if(close(fd)) ERR(_("Can't close mmap'ed file"));
|
||||
mmapbuf *ret = MALLOC(mmapbuf, 1);
|
||||
ret->data = ptr;
|
||||
ret->len = Mlen;
|
||||
return ret;
|
||||
}
|
||||
|
||||
void My_munmap(mmapbuf *b){
|
||||
if(munmap(b->data, b->len))
|
||||
ERR(_("Can't munmap"));
|
||||
FREE(b);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user