std::string TextReader::readTextLine()
{
/*
auto delim = data.find('\n', pos);
std::string ret(data.substr(pos, delim))
pos = (delim == std::string::npos) ? data.size() : delim + 1;
if(!ret.empty() && (ret.back() == '\r')){
ret.pop_back();
}
return std::move(ret);
}
*/
if (checkEOF())
{
//std::cout << "EOF-1!" << std::endl;
index = textBytes.size();
return std::string();
}
auto begin = &this->textBytes[this->index];
if (auto end = strpbrk(begin, "\n\r"))
{
auto length = end - begin;
this->index += length;
if (checkEOF())
{
//std::cout << "EOF-1!" << std::endl;
index = textBytes.size();
return std::string();
}
while (this->textBytes.at(this->index) == '\r' || this->textBytes.at(this->index) == '\n')
{
++this->index;
}
return std::string(begin, end);
}
//std::cout << "EOF-2!" << std::endl;
index = textBytes.size();
return std::string();
}
static int
tiffcmp(TIFF* tif1, TIFF* tif2)
{
uint16 config1, config2;
tsize_t size1;
uint32 s, row;
unsigned char *buf1, *buf2;
if (!CheckShortTag(tif1, tif2, TIFFTAG_BITSPERSAMPLE, "BitsPerSample"))
return (0);
if (!CheckShortTag(tif1, tif2, TIFFTAG_SAMPLESPERPIXEL, "SamplesPerPixel"))
return (0);
if (!CheckLongTag(tif1, tif2, TIFFTAG_IMAGEWIDTH, "ImageWidth"))
return (0);
if (!cmptags(tif1, tif2))
return (1);
(void) TIFFGetField(tif1, TIFFTAG_BITSPERSAMPLE, &bitspersample);
(void) TIFFGetField(tif1, TIFFTAG_SAMPLESPERPIXEL, &samplesperpixel);
(void) TIFFGetField(tif1, TIFFTAG_IMAGEWIDTH, &imagewidth);
(void) TIFFGetField(tif1, TIFFTAG_IMAGELENGTH, &imagelength);
(void) TIFFGetField(tif1, TIFFTAG_PLANARCONFIG, &config1);
(void) TIFFGetField(tif2, TIFFTAG_PLANARCONFIG, &config2);
buf1 = (unsigned char *)_TIFFmalloc(size1 = TIFFScanlineSize(tif1));
buf2 = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(tif2));
if (buf1 == NULL || buf2 == NULL) {
fprintf(stderr, "No space for scanline buffers\n");
exit(-1);
}
if (config1 != config2 && bitspersample != 8 && samplesperpixel > 1) {
fprintf(stderr,
"Can't handle different planar configuration w/ different bits/sample\n");
goto bad;
}
#define pack(a,b) ((a)<<8)|(b)
switch (pack(config1, config2)) {
case pack(PLANARCONFIG_SEPARATE, PLANARCONFIG_CONTIG):
for (row = 0; row < imagelength; row++) {
if (TIFFReadScanline(tif2, buf2, row, 0) < 0)
checkEOF(tif2, row, -1)
for (s = 0; s < samplesperpixel; s++) {
if (TIFFReadScanline(tif1, buf1, row, s) < 0)
checkEOF(tif1, row, s)
SeparateCompare(1, s, row, buf2, buf1);
}
}
break;
case pack(PLANARCONFIG_CONTIG, PLANARCONFIG_SEPARATE):
for (row = 0; row < imagelength; row++) {
if (TIFFReadScanline(tif1, buf1, row, 0) < 0)
checkEOF(tif1, row, -1)
for (s = 0; s < samplesperpixel; s++) {
if (TIFFReadScanline(tif2, buf2, row, s) < 0)
checkEOF(tif2, row, s)
SeparateCompare(0, s, row, buf1, buf2);
}
}
break;
case pack(PLANARCONFIG_SEPARATE, PLANARCONFIG_SEPARATE):
for (s = 0; s < samplesperpixel; s++)
for (row = 0; row < imagelength; row++) {
if (TIFFReadScanline(tif1, buf1, row, s) < 0)
checkEOF(tif1, row, s)
if (TIFFReadScanline(tif2, buf2, row, s) < 0)
checkEOF(tif2, row, s)
ContigCompare(s, row, buf1, buf2, size1);
}
break;
case pack(PLANARCONFIG_CONTIG, PLANARCONFIG_CONTIG):
for (row = 0; row < imagelength; row++) {
if (TIFFReadScanline(tif1, buf1, row, 0) < 0)
checkEOF(tif1, row, -1)
if (TIFFReadScanline(tif2, buf2, row, 0) < 0)
checkEOF(tif2, row, -1)
ContigCompare(-1, row, buf1, buf2, size1);
}
break;
}
if (buf1) _TIFFfree(buf1);
if (buf2) _TIFFfree(buf2);
return (1);
bad:
if (stopondiff)
exit(1);
if (buf1) _TIFFfree(buf1);
if (buf2) _TIFFfree(buf2);
return (0);
}
int main(int argc, char *argv[])
{
char *line;
char *prompt = "myshell>";
char *envPrompt = "DASH_PROMPT";
char *args[2048];
char *str;
char *multiCmd[2048];
int i=0;
int flag;
int jobid;
int code;
int fd1,fd2;
tcpid = getpgrp();
ObjectPtr myObj;
NodePtr node;
lst = createList(getKey,toString,freeObject); // Creating a List
prompt = getenv(envPrompt);
if(prompt == NULL)
prompt = "myshell>";
using_history();
if(signal(SIGINT,signalHandling) == SIG_ERR){}
if(signal(SIGTSTP,signalHandling) == SIG_ERR){}
if(signal(SIGTTOU,SIG_IGN)==SIG_ERR){}
if(signal(SIGCHLD,SIG_DFL)==SIG_ERR){}
if((argc == 2) && (strcmp(argv[1],"-v")==0))
{
printf("%s\n",svn_version());
exit(0);
}
code = sigsetjmp(env,TRUE);
while ((line=readline(prompt))) // Reading Input
{
if(line==NULL)
{
printf("\n read line failed \n");
continue;
}
add_history(line);
str = (char *)mymalloc(sizeof(char)*(strlen(line)+1));
strcpy(str,line);
if(str[0] == '&' || str[0] == ';')
{
printf("dash: syntax error near unexpected token %c \n",str[0]);
freeVar(line,str,args);
continue;
}
while((pid = waitpid(-1,NULL,WNOHANG)) > 0)
{
node = search(lst,pid);
((ObjectPtr)(node->obj))->jobStatus = 0;
printf("%s\n",(*toString)(node->obj));
removeNode(lst,node);
}
if(checkMultiCmd(str, multiCmd)== -1)
continue;
while(multiCmd[i])
{
flag = searchAmp(multiCmd[i]); // Function to check if there is an '&' in the Command
struct IORedirect *ior = tokenize(multiCmd[i],args);
if((int)ior == -1)
break; // Parsing the Command that needs to be executed
if(exitLogout(multiCmd[i])) // Function to check Exit and Logout Commands
{
if(checkStoppedJobs())
{
//memset(multiCmd,0,sizeof(multiCmd));
break;
}
else
{
freeVar(line,str,args);
freeList(lst);
memset(multiCmd,'\0',sizeof(multiCmd));
myfree(ior);
exit(0);
}
}
if(checkEOF(multiCmd[i])) // Function to check EOF
{
freeVar(line,str,args);
memset(multiCmd,'\0',sizeof(multiCmd));
freeList(lst);
myfree(ior);
exit(0);
}
if(checkEmptyCmd(multiCmd[i])) // Function to Check if Enter Key is pressed
break;
if((strcmp(args[0],"cd")==0) && (flag == FALSE)) // Function to check if 'cd' command is used
{
chgDir(args);
break;
}
if((strcmp(args[0],"jobs")==0) && (flag == FALSE)) // Function to check if 'jobs' command is used
{
jobsCmd();
break;
}
if(strcmp(args[0],"history")==0)
{
printHistory(args, str, flag);
break;
}
if((strcmp(args[0],"bg") == 0) && (flag == FALSE))
{
bgCmd(args);
break;
}
if((strcmp(args[0],"fg")==0) && (flag == FALSE))
{
fgCmd(args);
break;
}
if(ampCount(multiCmd[i]))
{
printf(" dash: syntax error near unexpected token '&' \n");
break;
}
if ( (pid = fork()) < 0) // Forking a Process
err_sys("fork error");
else if (pid == 0)
{
struct stat buf;
/* child */
if(flag == TRUE)
{
if(setpgid(0,0)!=0)
perror("setpid() error");
if(tcsetpgrp(0,tcpid)!=0)
perror("tcsetpgrp() error");
}
if(ior->input != NULL)
{
if((fd1 = stat(ior->input,&buf))==-1){
printf("dash: %s file does not exist\n",ior->input);
break;
}
if((fd1= access(ior->input,R_OK))==-1){
printf("dash: %s permission denied\n",ior->input);
break;
}
if((fd1 = open(ior->input,O_RDONLY))==-1){
printf("dash: %s inpRedirect opening failed\n",ior->input);
break;
}
else {
close(0);
dup(fd1);
}
}
if(ior->output != NULL)
{
/*if((fd1= access(ior->output,W_OK))==-1){
printf("dash: %s permission denied",ior->output);
break;}*/
if((fd2=open(ior->output,O_WRONLY|O_TRUNC|O_CREAT,S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH ))==-1){
printf("dash: %s outRedirect opening failed\n",ior->output);
break;}
else{
close(1);
dup(fd2);
}
}
if (setpgid(0,0) != 0)
perror("setpgid() error");
if (tcsetpgrp(0, getpid()) != 0)
perror("tcsetpgrp() error");
execvp(args[0],args);
err_ret("couldn't execute: %s", line);
exit(127);
}
if(flag == TRUE && (*args[0] !='\0'))
{
jobid = assignJobId();
myObj = createObject(pid,multiCmd[i],jobid,1);
node = createNode(myObj);
addAtRear(lst,node);
printf("[%d] %d %s &\n",((ObjectPtr)(node->obj))->jobId, ((ObjectPtr)(node->obj))->key, ((ObjectPtr)(node->obj))->data);
if ( (pid = waitpid(pid, &status, WNOHANG)) < 0)
err_sys("waitpid error");
if((tcsetpgrp(0,tcpid))!=0)
perror("tcsetgroup error");
}
else
{
if ( (pid = waitpid(pid, &status, 0|WUNTRACED)) < 0)
err_sys("waitpid error");
if((tcsetpgrp(0,tcpid))!=0)
perror("tcsetgroup error");
if(WIFSTOPPED(status))
{
jobid = assignJobId();
myObj = createObject(pid,line,jobid,2);
node = createNode(myObj);
addAtRear(lst,node);
printf("%s\n",(*toString)(node->obj));
}
}
i++;
}
freeVar(line,str,args);
memset(multiCmd,'\0',sizeof(multiCmd));
i=0;
}
freeList(lst);
exit(0);
}
