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read.c
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Fri, Nov 29, 05:55

read.c
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#include<stdio.h>
#include<ctype.h>
#include<stdlib.h>
#include<string.h>
/* Read a word in fichier and return it in mot as a
* \0 terminated string.
*
* A word finishes when \n, ' ', \t or # is found.
*/
void fmot(FILE *fichier, char mot[])
{
int i = 0;
char c;
c = getc(fichier);
while ( c == ' ' || c == '\t' )
{
c = getc(fichier);
}
while ( c != '\n' && c != ' ' && c != '\t' && c != '#' && c != '\r' )
{
if ( c != '\r' )
mot[i++] = c ;
c = getc(fichier);
}
mot[i] = '\0';
}
/* Remove the final blank or TAB characters
*/
void chop(char * str)
{
int i = strlen(str);
if ( i == 0 ) return;
while ( ( str[i-1] == ' ' || str[i-1] == '\t' ) && i > 0 )
{
i--;
}
str[i] = '\0';
}
/* Convert a NUL terminated string to upper case.
* The argument is modified.
* Return a pointer to the string.
*/
char* upcase(char * str)
{
int i = 0;
while ( str[i] != '\0' )
{
str[i] = islower(str[i]) ? toupper(str[i]) : str[i];
i ++;
}
return str;
}
/* Read a line in fichier and return it in phrase as
* a \0 terminated string.
*
* A line finishes when \n is found.
* The returned line do not include comments nor trailing blank
* characters (' ' or '\t' ).
*/
void flire(FILE *fichier, char phrase[])
{
int i = 0;
char c;
c = getc(fichier);
while ( !feof(fichier) && !ferror(fichier) &&
c != '\n' && c != '#' )
{
if ( c != '\r' ) // ignore criage return of DOS newline
phrase[i++] = c;
c = getc(fichier);
}
// dump the rest of the line until the \n character if necessary
if ( c == '#' )
while ( !feof(fichier) && !ferror(fichier) && getc(fichier) != '\n' );
phrase[i] = '\0';
chop(phrase);
}
/* Increment by n*8 the position in the FILE fichier*/
void ftab(FILE *fichier, int n)
{
int i;
for (i = 0; i < n*8; i++) getc(fichier);
}
/* Increment by n the position in the FILE fichier*/
void fblanc(FILE *fichier, int n)
{
int i;
for (i = 0; i < n; i++) getc(fichier);
}
/* Compares str1 to str2 character by character
* Return
* - 0 if str1 and str2 have the same root (eg C2a and C2b).
* - 1 otherwise (eg C23a and C2a)
* */
int indexCmp(const char *str1, const char *str2)
{
char a[50], b[50]; // temporary variables
// if <str1> and <str2> are exactly the same
if ( !strcmp(str1, str2) )
return(0);
strcpy(a, str1);
strcpy(b, str2);
if ( strlen(a) > 1 && strlen(b) > 1 )
{
/*Remove the last character of <str1>*/
a[strlen(a)-1] = '\0';
/*Remove the last character of <str2>*/
b[strlen(b)-1] = '\0';
/*Compare the 2 strings*/
if (!strcmp(a, b))
return(0);
else
return(1);
}
else
// <str1> or <str2> have only 1 character
return(1);
}
/*
* Like the Unix wc tool, wc return the number of lines in the
* file.
*
* It returns -1 if an error occured during the count and 0 for
* an empty file.
*
* The file pointer is reset to the beginning of the file.
* parameters :
* - file : a pointer to a FILE
*/
long int wc(FILE * file)
{
long int count = 0; // newline counter
fpos_t pos;
fgetpos(file, &pos);
rewind(file);
while ( !ferror(file) && !feof(file))
{
if ( fgetc(file) == '\n' )
count++;
}
if ( ferror(file) )
count = -1;
else
fsetpos(file, &pos);
return count;
}
/* Return the number of words in a string
* Words are separated by spaces
* str string is not modified, but must be lower than 128 characters
*/
int getWords(char *str)
{
char *pch;
char tmp[128];
int count;
if( strlen(str) > 128 )
{
fprintf( stderr, "ERROR (getWords) : string size greater than 128\n");
exit(1);
}
strcpy(tmp, str);
count = 0; pch = strtok(tmp, " ");
while( pch != NULL ) { pch = strtok(NULL, " "); count++; }
return count;
}

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