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/*
* Image plugin to VDR (C++)
*
* (c) 2004-2011 Andreas Brachold <vdr07 at deltab.de>
*
* This code is distributed under the terms and conditions of the
* GNU GENERAL PUBLIC LICENSE. See the file COPYING for details.
*
*/
#include <malloc.h>
#include <ctype.h>
#include <stdlib.h>
#include <unistd.h>
#include "commands.h"
#include "setup-image.h"
// --- cImageCommand -------------------------------------------------------------
char *cImageCommand::m_szLastResult = NULL;
cImageCommand::cImageCommand(void)
: m_szTitle(NULL)
, m_szCommand(NULL)
, m_bConfirm(false)
{
}
cImageCommand::~cImageCommand()
{
if(m_szTitle)
{
free(m_szTitle);
m_szTitle = NULL;
}
if(m_szCommand)
{
free(m_szCommand);
m_szCommand = NULL;
}
}
bool cImageCommand::Parse(const char *s)
{
const char *p = strchr(s, ':');
if(p)
{
int l = p - s;
if(l > 0)
{
m_szTitle = MALLOC(char, l + 1);
stripspace(strn0cpy(m_szTitle, s, l + 1));
if(!isempty(m_szTitle))
{
int l = strlen(m_szTitle);
if(l > 1 && m_szTitle[l - 1] == '?')
{
m_bConfirm = true;
m_szTitle[l - 1] = 0;
}
m_szCommand = stripspace(strdup(skipspace(p + 1)));
return !isempty(m_szCommand);
}
}
}
return false;
}
const char *cImageCommand::Execute(const char *szFileName)
{
char *szCmdBuf = NULL;
if(m_szLastResult)
{
free(m_szLastResult);
m_szLastResult = NULL;
}
// Combine command and filename
if(szFileName && m_szCommand) {
if(NULL == strstr(m_szCommand, "%s")) {
/// Merge command and filename e.g : identify 'my_image.png'
asprintf(&szCmdBuf, "%s \'%s\'", m_szCommand, szFileName);
}
else {
/// Replace Mode, replace any %s with filename
/// e.g. : jpegtran -rotate 90 %s > $CONVERT_TEMPDIR/tmp.jpg && mv $CONVERT_TEMPDIR/tmp.jpg %s
/// would to jpegtran -rotate 90 'my_image.png' > $CONVERT_TEMPDIR/tmp.jpg && mv $CONVERT_TEMPDIR/tmp.jpg 'my_image.png'
char *szF;
asprintf(&szF, "\'%s\'", szFileName);
if(szF) {
szCmdBuf = (char*)calloc(PATH_MAX,1);
if(szCmdBuf)
{
char* d = szCmdBuf;
char* s = m_szCommand;
for(;d-szCmdBuf < PATH_MAX-1 && *s != '\0';++s,++d)
{
if(*s == '%' && *(s+1) == 's')
{
strncat(szCmdBuf,szF,PATH_MAX-1);
d += strlen(szF)-1;
++s;
}
else
*d = *s;
}
}
}
free(szF);
}
}
const char *szCmd = szCmdBuf ? szCmdBuf : m_szCommand;
dsyslog("imageplugin: executing command '%s'", szCmd);
// Set environment
ImageSetup.SetEnv();
FILE *p = popen(szCmd, "r");
if(p)
{
int l = 0;
int c;
while((c = fgetc(p)) != EOF)
{
if(l % 20 == 0) {
m_szLastResult = (char *)realloc(m_szLastResult, l + 21);
if(!m_szLastResult)
break;
}
m_szLastResult[l++] = c;
}
if(m_szLastResult)
m_szLastResult[l] = 0;
pclose(p);
}
else
esyslog("imageplugin: can't open pipe for command '%s'", szCmd);
if(szCmdBuf)
free(szCmdBuf);
return m_szLastResult;
}
cImageCommands::cImageCommands(void)
: m_szFileName(NULL)
{
}
cImageCommands::~ cImageCommands()
{
Clear();
}
void cImageCommands::Clear(void)
{
if(m_szFileName)
free(m_szFileName);
m_szFileName = NULL;
cList < cImageCommand >::Clear();
}
bool cImageCommands::Load(const char *szFileName/* = NULL*/, bool bAllowComments /*=true*/, bool bMustExist /*= false*/)
{
Clear();
if(szFileName)
{
m_szFileName = strdup(szFileName);
m_bAllowComments = bAllowComments;
}
bool bRet = !bMustExist;
if(m_szFileName && access(m_szFileName, F_OK) == 0)
{
isyslog("imageplugin: loading %s", m_szFileName);
FILE *f = fopen(m_szFileName, "r");
if(f)
{
int n = 0;
char szBuf[8192];
bRet = true;
while(fgets(szBuf, sizeof(szBuf), f) > 0)
{
++n;
if(m_bAllowComments)
{
char *p = strchr(szBuf, '#');
if(p)
*p = 0;
}
stripspace(szBuf);
if(!isempty(szBuf))
{
cImageCommand *l = new cImageCommand;
if(l->Parse(szBuf))
{
Add(l);
}
else
{
esyslog("imageplugin: error in %s, line %d\n",m_szFileName, n);
delete l;
bRet = false;
break;
}
}
}
fclose(f);
} else
{
esyslog("imageplugin: error %s: %m", m_szFileName);
bRet = false;
}
}
if(!bRet)
esyslog("imageplugin: error while reading '%s'\n", m_szFileName);
return bRet;
}
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