stringbuffer.c

来自「SRI international 发布的OAA框架软件」· C语言 代码 · 共 124 行

#include "stringbuffer.h"
#include "stringbuffer_private.h"
#include <stdio.h>

stringbuffer_t* stringbuffer_new(char* data, size_t len)
{
  stringbuffer_t* newBuf = (stringbuffer_t*)malloc(sizeof(stringbuffer_t));
  newBuf->data = data;
  newBuf->len = len;
  newBuf->index = 0;
  return newBuf;
}

stringbuffer_t* stringbuffer_reset(stringbuffer_t* buf, char* data, size_t len)
{
  buf->data = data;
  buf->len = len;
  buf->index = 0;
  return buf;
}

int stringbuffer_read(stringbuffer_t* buf)
{
  /*
  {
    char* data = (char*)malloc(buf->len + 1);
    memset(data, 0, buf->len + 1);
    memcpy(data, buf->data, buf->len);
    printf("stringbuffer_read current buffer contains [%s]\n", data);
    free(data);
  }
  */
  if(buf->index >= buf->len) {
    /*
    fprintf(stdout, "stringbuffer_read returning EOF\n");
    */
    return EOF;
  }
  /*
  fprintf(stdout, "stringbuffer_read returning %o\n", (unsigned char)(buf->data[buf->index]));
  */
  return((unsigned char)(buf->data[buf->index++]));
}

stringbuffer_t* stringbuffer_rewind(stringbuffer_t* buf, size_t rewindLen)
{
  if(buf->index > rewindLen) {
    buf->index -= rewindLen;
  }
  else {
    buf->index = 0;
  }

  return buf;
}

stringbuffer_t* stringbuffer_setIndex(stringbuffer_t* buf, size_t newIndex)
{
  buf->index = newIndex;
  return buf;
}

void stringbuffer_delete(stringbuffer_t* buf)
{
  free(buf);
}

char* stringbuffer_getData(stringbuffer_t* buf)
{
  return buf->data;
}

size_t stringbuffer_getLen(stringbuffer_t* buf)
{
  return buf->len;
}

size_t stringbuffer_getIndex(stringbuffer_t* buf)
{
  return buf->index;
}

/**
 * @defgroup Parser Parser
 *
 * Some text about this module.
 *
 * @{
 */

/**
 * @file parser.c
 */

/**
 * @file scan.c
 */

/**
 * @file stdpccts.h
 */

/**
 * @file err.c
 */

/**
 * @file mode.h
 */

/**
 * @file tokens.h
 */

/**
 * @file stringbuffer.h
 */

/**
 * @file stringbuffer.c
 */

/** @} */