/*******************************************************************/

/*  slibtool: a strong libtool implementation, written in C        */

/*  Copyright (C) 2016--2024  SysDeer Technologies, LLC            */

/*  Released under the Standard MIT License; see COPYING.SLIBTOOL. */

/*******************************************************************/

#include <time.h>

#include <locale.h>

#include <regex.h>

#include <inttypes.h>

#include <slibtool/slibtool.h>

#include <slibtool/slibtool_output.h>

#include "slibtool_driver_impl.h"

#include "slibtool_dprintf_impl.h"

#include "slibtool_errinfo_impl.h"

#include "slibtool_pecoff_impl.h"

#include "slibtool_tmpfile_impl.h"

#include "slibtool_ar_impl.h"

#define SLBT_PRETTY_FLAGS       (SLBT_PRETTY_YAML      \

	                         | SLBT_PRETTY_POSIX    \

	                         | SLBT_PRETTY_HEXDATA)

static int slbt_au_output_symbols_posix(

	const struct slbt_driver_ctx *  dctx,

	struct slbt_archive_meta_impl * mctx,

	int                             fdout)

{

	bool            fsort;

	bool            fcoff;

	const char *    dot;

	const char *    mark;

	const char *    regex;

	const char **   symv;

	const char **   symstrv;

	regex_t         regctx;

	regmatch_t      pmatch[2] = {{0,0},{0,0}};

	char            strbuf[4096];

	fsort = !(dctx->cctx->fmtflags & SLBT_OUTPUT_ARCHIVE_NOSORT);

	fcoff = (mctx->ofmtattr & AR_OBJECT_ATTR_COFF);

	if (fsort && !mctx->mapstrv)

		if (slbt_update_mapstrv(dctx,mctx) < 0)

			return SLBT_NESTED_ERROR(dctx);

	if ((regex = dctx->cctx->regex))

		if (regcomp(&regctx,regex,REG_EXTENDED|REG_NEWLINE))

			return SLBT_CUSTOM_ERROR(

				dctx,

				SLBT_ERR_FLOW_ERROR);

	symstrv = fsort ? mctx->mapstrv : mctx->symstrv;

	for (symv=symstrv; *symv; symv++) {

		if (!fcoff || slbt_is_strong_coff_symbol(*symv)) {

			if (!regex || !regexec(&regctx,*symv,1,pmatch,0)) {

				if (slbt_dprintf(fdout,"%s\n",*symv) < 0)

					return SLBT_SYSTEM_ERROR(dctx,0);

			}

		/* coff weak symbols: expsym = .weak.alias.strong */

		} else if (fcoff && !strncmp(*symv,".weak.",6)) {

			mark = &(*symv)[6];

			dot  = strchr(mark,'.');

			strncpy(strbuf,mark,dot-mark);

			strbuf[dot-mark] = '\0';

			if (!regex || !regexec(&regctx,strbuf,1,pmatch,0))

				if (slbt_dprintf(fdout,"%s\n",strbuf) < 0)

					return SLBT_SYSTEM_ERROR(dctx,0);

		}

	}

	if (regex)

		regfree(&regctx);

	return 0;

}

static int slbt_au_output_one_symbol_yaml(

	int                             fdout,

	struct slbt_archive_meta_impl * mctx,

	const char *                    symname)

{

	struct ar_meta_symbol_info **   syminfv;

	for (syminfv=mctx->syminfv; *syminfv; syminfv++)

		if (!strcmp(syminfv[0]->ar_symbol_name,symname))

			return slbt_dprintf(

				fdout,

				"    - Symbol:\n"

				"      - [ object_name: " "%s"    " ]\n"

				"      - [ symbol_name: " "%s"    " ]\n"

				"      - [ symbol_type: " "%s"    " ]\n\n",

				syminfv[0]->ar_object_name,

				symname,

				syminfv[0]->ar_symbol_type);

	return 0;

}

static int slbt_au_output_symbols_yaml(

	const struct slbt_driver_ctx *  dctx,

	struct slbt_archive_meta_impl * mctx,

	int                             fdout)

{

	int                             fdtmp;

	bool                            fsort;

	bool                            fcoff;

	const char *                    dot;

	const char *                    mark;

	const char *                    regex;

	const char **                   symv;

	const char **                   symstrv;

	regex_t                         regctx;

	regmatch_t                      pmatch[2] = {{0,0},{0,0}};

	char                            strbuf[4096];

	fsort = !(dctx->cctx->fmtflags & SLBT_OUTPUT_ARCHIVE_NOSORT);

	fcoff = (mctx->ofmtattr & AR_OBJECT_ATTR_COFF);

	if ((fdtmp = slbt_tmpfile()) < 0)

		return SLBT_SYSTEM_ERROR(dctx,0);

	if (fsort && !mctx->mapstrv)

		if (slbt_update_mapstrv(dctx,mctx) < 0)

			return SLBT_NESTED_ERROR(dctx);

	if (slbt_ar_update_syminfo_ex(mctx->actx,fdtmp) < 0)

		return SLBT_NESTED_ERROR(dctx);

	if ((regex = dctx->cctx->regex))

		if (regcomp(&regctx,regex,REG_EXTENDED|REG_NEWLINE))

			return SLBT_CUSTOM_ERROR(

				dctx,

				SLBT_ERR_FLOW_ERROR);

	symstrv = fsort ? mctx->mapstrv : mctx->symstrv;

	if (slbt_dprintf(fdout,"  - Symbols:\n") < 0)

		return SLBT_SYSTEM_ERROR(dctx,0);

	for (symv=symstrv; *symv; symv++) {

		if (!fcoff || slbt_is_strong_coff_symbol(*symv)) {

			if (!regex || !regexec(&regctx,*symv,1,pmatch,0)) {

				if (slbt_au_output_one_symbol_yaml(

						fdout,mctx,*symv) < 0)

					return SLBT_SYSTEM_ERROR(dctx,0);

			}

		/* coff weak symbols: expsym = .weak.alias.strong */

		} else if (fcoff && !strncmp(*symv,".weak.",6)) {

			mark = &(*symv)[6];

			dot  = strchr(mark,'.');

			strncpy(strbuf,mark,dot-mark);

			strbuf[dot-mark] = '\0';

			if (!regex || !regexec(&regctx,strbuf,1,pmatch,0))

				if (slbt_au_output_one_symbol_yaml(

						fdout,mctx,strbuf) < 0)

					return SLBT_SYSTEM_ERROR(dctx,0);

		}

	}

	if (regex)

		regfree(&regctx);

	return 0;

}

int slbt_au_output_symbols(const struct slbt_archive_meta * meta)

{

	struct slbt_archive_meta_impl * mctx;

	const struct slbt_driver_ctx *  dctx;

	int                             fdout;

	mctx = slbt_archive_meta_ictx(meta);

	dctx = (slbt_archive_meta_ictx(meta))->dctx;

	fdout = slbt_driver_fdout(dctx);

	if (!meta->a_memberv)

		return 0;

	switch (dctx->cctx->fmtflags & SLBT_PRETTY_FLAGS) {

		case SLBT_PRETTY_YAML:

			return slbt_au_output_symbols_yaml(

				dctx,mctx,fdout);

		case SLBT_PRETTY_POSIX:

			return slbt_au_output_symbols_posix(

				dctx,mctx,fdout);

		default:

			return slbt_au_output_symbols_yaml(

				dctx,mctx,fdout);

	}

}