SStream.c

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/* Capstone Disassembly Engine */
/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2015 */
 
#include <stdarg.h>
#if defined(CAPSTONE_HAS_OSXKERNEL)
#include <Availability.h>
#include <libkern/libkern.h>
#include <i386/limits.h>
#else
#include <stdio.h>
#include <limits.h>
#endif
#include <string.h>
 
#include <capstone/platform.h>
 
#include "SStream.h"
#include "cs_priv.h"
#include "utils.h"
 
#ifdef _MSC_VER
#pragma warning(disable: 4996) // disable MSVC's warning on strcpy()
#endif
 
void SStream_Init(SStream *ss)
{
    ss->index = 0;
    ss->buffer[0] = '\0';
}
 
void SStream_concat0(SStream *ss, const char *s)
{
#ifndef CAPSTONE_DIET
    if (!ss || !s) {
        return;
    }
    unsigned int len = (unsigned int) strlen(s);
 
    memcpy(ss->buffer + ss->index, s, len);
    ss->index += len;
    ss->buffer[ss->index] = '\0';
#endif
}
 
void SStream_concat(SStream *ss, const char *fmt, ...)
{
#ifndef CAPSTONE_DIET
    va_list ap;
    int ret;
 
    va_start(ap, fmt);
    ret = cs_vsnprintf(ss->buffer + ss->index, sizeof(ss->buffer) - (ss->index + 1), fmt, ap);
    va_end(ap);
    ss->index += ret;
#endif
}
 
// print number with prefix #
void printInt64Bang(SStream *O, int64_t val)
{
    if (val >= 0) {
        if (val > HEX_THRESHOLD)
            SStream_concat(O, "#0x%"PRIx64, val);
        else
            SStream_concat(O, "#%"PRIu64, val);
    } else {
        if (val <- HEX_THRESHOLD) {
            if (val == LONG_MIN)
                SStream_concat(O, "#-0x%"PRIx64, (uint64_t)val);
            else
                SStream_concat(O, "#-0x%"PRIx64, (uint64_t)-val);
        }
        else
            SStream_concat(O, "#-%"PRIu64, -val);
    }
}
 
void printUInt64Bang(SStream *O, uint64_t val)
{
    if (val > HEX_THRESHOLD)
        SStream_concat(O, "#0x%"PRIx64, val);
    else
        SStream_concat(O, "#%"PRIu64, val);
}
 
// print number
void printInt64(SStream *O, int64_t val)
{
    if (val >= 0) {
        if (val > HEX_THRESHOLD)
            SStream_concat(O, "0x%"PRIx64, val);
        else
            SStream_concat(O, "%"PRIu64, val);
    } else {
        if (val <- HEX_THRESHOLD) {
            if (val == LONG_MIN)
                SStream_concat(O, "-0x%"PRIx64, (uint64_t)val);
            else
                SStream_concat(O, "-0x%"PRIx64, (uint64_t)-val);
        }
        else
            SStream_concat(O, "-%"PRIu64, -val);
    }
}
 
// print number in decimal mode
void printInt32BangDec(SStream *O, int32_t val)
{
    if (val >= 0)
        SStream_concat(O, "#%u", val);
    else
        if (val == INT_MIN)
            SStream_concat(O, "#-%u", val);
        else
            SStream_concat(O, "#-%u", (uint32_t)-val);
}
 
void printInt32Bang(SStream *O, int32_t val)
{
    if (val >= 0) {
        if (val > HEX_THRESHOLD)
            SStream_concat(O, "#0x%x", val);
        else
            SStream_concat(O, "#%u", val);
    } else {
        if (val <- HEX_THRESHOLD) {
            if (val == INT_MIN)
                SStream_concat(O, "#-0x%x", (uint32_t)val);
            else
                SStream_concat(O, "#-0x%x", (uint32_t)-val);
        }
        else
            SStream_concat(O, "#-%u", -val);
    }
}
 
void printInt32(SStream *O, int32_t val)
{
    if (val >= 0) {
        if (val > HEX_THRESHOLD)
            SStream_concat(O, "0x%x", val);
        else
            SStream_concat(O, "%u", val);
    } else {
        if (val <- HEX_THRESHOLD) {
            if (val == INT_MIN)
                SStream_concat(O, "-0x%x", (uint32_t)val);
            else
                SStream_concat(O, "-0x%x", (uint32_t)-val);
            }
        else
            SStream_concat(O, "-%u", -val);
    }
}
 
void printUInt32Bang(SStream *O, uint32_t val)
{
    if (val > HEX_THRESHOLD)
        SStream_concat(O, "#0x%x", val);
    else
        SStream_concat(O, "#%u", val);
}
 
void printUInt32(SStream *O, uint32_t val)
{
    if (val > HEX_THRESHOLD)
        SStream_concat(O, "0x%x", val);
    else
        SStream_concat(O, "%u", val);
}
 
/*
   int main()
   {
   SStream ss;
   int64_t i;
 
   SStream_Init(&ss);
 
   SStream_concat(&ss, "hello ");
   SStream_concat(&ss, "%d - 0x%x", 200, 16);
 
   i = 123;
   SStream_concat(&ss, " + %ld", i);
   SStream_concat(&ss, "%s", "haaaaa");
 
   printf("%s\n", ss.buffer);
 
   return 0;
   }
 */