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/*******************************************************************/
/* slibtool: a skinny libtool implementation, written in C */
/* Copyright (C) 2016--2024 SysDeer Technologies, LLC */
/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
/*******************************************************************/
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <slibtool/slibtool.h>
#include "slibtool_driver_impl.h"
#include "slibtool_dprintf_impl.h"
#include "slibtool_errinfo_impl.h"
static const char lconf_begin[] = "# ### BEGIN LIBTOOL CONFIG\n";
static const char lconf_end [] = "# ### END LIBTOOL CONFIG\n";
static int slbt_output_config_lconf(
const struct slbt_driver_ctx * dctx,
const struct slbt_map_info * lconf)
{
const char * ch;
const char * cfg_begin;
const char * cfg_end;
const char * map_cap;
size_t cmp_len;
size_t end_len;
size_t min_len;
size_t nbytes;
ssize_t written;
int fdout;
cmp_len = strlen(lconf_begin);
end_len = strlen(lconf_end);
min_len = cmp_len + end_len;
if (lconf->size < min_len)
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_FLOW_ERROR);
map_cap = lconf->addr;
map_cap += lconf->size;
map_cap -= strlen(lconf_end);
map_cap -= strlen(lconf_begin);
cfg_begin = cfg_end = 0;
for (ch=lconf->addr; !cfg_begin && (ch < map_cap); ch++)
if (!strncmp(ch,lconf_begin,cmp_len))
cfg_begin = ch;
if (!cfg_begin)
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_FLOW_ERROR);
for (++ch; !cfg_end && (ch < map_cap); ch++)
if (!strncmp(ch,lconf_end,end_len))
cfg_end = ch;
if (!cfg_end)
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_FLOW_ERROR);
fdout = slbt_driver_fdout(dctx);
nbytes = cfg_end - cfg_begin - cmp_len;
for (ch=&cfg_begin[cmp_len]; nbytes; ) {
written = write(fdout,ch,nbytes);
while ((written < 0) && (errno == EINTR))
written = write(fdout,ch,nbytes);
if (written < 0)
return SLBT_SYSTEM_ERROR(dctx,0);
nbytes -= written;
ch += written;
}
return 0;
}
int slbt_output_config(const struct slbt_driver_ctx * dctx)
{
struct slbt_driver_ctx_impl * ictx;
const struct slbt_map_info * lconf;
ictx = slbt_get_driver_ictx(dctx);
lconf = &ictx->lconf;
if (lconf->addr)
return slbt_output_config_lconf(
dctx,lconf);
return 0;
}
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