* Jonathan McDowell <noodles@earth.li>
*
* Copyright 2002 Project Purple
- *
- * $Id: charfuncs.c,v 1.4 2003/10/04 10:21:40 noodles Exp $
*/
#include <stdio.h>
+#include <string.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>
* @count: The number of characters to get from the buffer.
* @c: Where to put the characters retrieved.
*/
-int buffer_fetchchar(void *ctx, size_t count, unsigned char *c)
+int buffer_fetchchar(void *ctx, size_t count, void *c)
{
struct buffer_ctx *buf = NULL;
- size_t i;
buf = (struct buffer_ctx *) ctx;
- for (i = 0; i < count; i++) {
- c[i] = buf->buffer[buf->offset++];
+
+ if (buf->offset + count > buf->size) {
+ return 1;
}
+
+ memcpy(c, &buf->buffer[buf->offset], count);
+ buf->offset += count;
- return (((buf->offset) == (buf->size)) ? 1 : 0);
+ return 0;
}
/**
* fill it then we double the size of the current buffer and then add the
* rest.
*/
-int buffer_putchar(void *ctx, size_t count, unsigned char *c)
+int buffer_putchar(void *ctx, size_t count, void *c)
{
struct buffer_ctx *buf = NULL;
size_t newsize = 0;
- size_t i;
buf = (struct buffer_ctx *) ctx;
buf->buffer = realloc(buf->buffer, newsize);
buf->size = newsize;
}
-
- for (i = 0; i < count; i++) {
- buf->buffer[buf->offset++] = c[i];
- }
+ memcpy(&buf->buffer[buf->offset], c, count);
+ buf->offset += count;
+
return 1;
}
/**
* file_fetchchar - Fetches a char from a file.
*/
-int file_fetchchar(void *fd, size_t count, unsigned char *c)
+int file_fetchchar(void *fd, size_t count, void *c)
{
return !(read( *(int *) fd, c, count));
}
/**
* file_putchar - Puts a char to a file.
*/
-int file_putchar(void *fd, size_t count, unsigned char *c)
+int file_putchar(void *fd, size_t count, void *c)
{
return !(write( *(int *) fd, c, count));
}
/**
* stdin_getchar - Gets a char from stdin.
*/
-int stdin_getchar(void *ctx, size_t count, unsigned char *c)
+int stdin_getchar(void *ctx, size_t count, void *c)
{
return (fread(c, 1, count, stdin) != count);
}
/**
* stdout_putchar - Puts a char to stdout.
*/
-int stdout_putchar(void *ctx, size_t count, unsigned char *c)
+int stdout_putchar(void *ctx, size_t count, void *c)
{
return (fwrite(c, 1, count, stdout) != count);
}