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sample-runner.c
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sample-runner.c
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/*
* sample-runner.c: Driver for the sample lexers.
*
* Copyright © 2012 Zachary Catlin. See LICENSE for terms.
*/
#include <stdio.h>
#include <stdlib.h>
extern void * SampleInit( void * (*alloc)(size_t), void (*unalloc)(void *) );
extern void SampleDestroy( void *lexer );
extern int SampleRead( void *lexer, char *input, size_t len );
int main(int argc, char **argv)
{
void *lexer = SampleInit(malloc, free);
char buf[256];
size_t num_in = 1;
if(lexer == NULL) {
fputs("Unable to initialize lexer!\n", stderr);
return 1;
}
/* n_in will only be zero in the case of EOF or a file error */
while(num_in != 0) {
num_in = fread(buf, 1, sizeof(buf), stdin);
if(num_in != 0) {
if(!SampleRead(lexer, buf, num_in)) {
fputs("An error occurred during lexing!\n", stderr);
SampleDestroy(lexer);
return 1;
}
}
if(ferror(stdin)) {
fputs("An error occurred during reading!\n", stderr);
SampleDestroy(lexer);
return 1;
}
}
if(!SampleRead(lexer, NULL, 0)) {
fputs("An error occurred during lexing near EOF!\n", stderr);
SampleDestroy(lexer);
return 1;
}
SampleDestroy(lexer);
return 0;
}