/* $TOG: makestrs.c /main/11 1998/02/06 11:24:15 kaleb $ */

/*

 * Motif
 *
 * Copyright (c) 1987-2012, The Open Group. All rights reserved.
 *
 * These libraries and programs are free software; you can
 * redistribute them and/or modify them under the terms of the GNU
 * Lesser General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * These libraries and programs are distributed in the hope that
 * they will be useful, but WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with these librararies and programs; if not, write
 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
 * Floor, Boston, MA 02110-1301 USA

*/

/* Constructs string definitions */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <X11/Xos.h>
#ifndef X_NOT_STDC_ENV
#include <stdlib.h>
#else
char *malloc();
#endif
#if defined(macII) && !defined(__STDC__)  /* stdlib.h fails to define these */
char *malloc();
#endif /* macII */

typedef struct _TableEnt {
    struct _TableEnt* next;
    char* left;
    char* right;
    int offset;
} TableEnt;

typedef struct _Table {
    struct _Table* next;
    TableEnt* tableent;
    TableEnt* tableentcurrent;
    TableEnt** tableenttail;
    char* name;
    int offset;
} Table;

typedef struct _File {
    struct _File* next;
    FILE* tmpl;
    char* name;
    Table* table;
    Table* tablecurrent;
    Table** tabletail;
} File;

static File* file = NULL;
static File* filecurrent = NULL;
static File** filetail = &file;
static char* conststr;
static char* prefixstr = NULL;
static char* featurestr = NULL;
static char* ctmplstr = NULL;
static char* fileprotstr;
static char* externrefstr;
static char* externdefstr;

#define X_DEFAULT_ABI	0
#define X_ARRAYPER_ABI	1
#define X_INTEL_ABI	2
#define X_INTEL_ABI_BC	3
#define X_SPARC_ABI	4
#define X_FUNCTION_ABI	5

#define X_MAGIC_STRING "<<<STRING_TABLE_GOES_HERE>>>"

static void
WriteHeaderProlog (FILE* f, File* phile)
{
    Table* t;
    TableEnt* te;

    (void) fprintf (f, "#ifdef %s\n", featurestr);
    for (t = phile->table; t; t = t->next)
	for (te = t->tableent; te; te = te->next) {
	    if (strcmp (te->left, "RAtom") == 0) {
		(void) fprintf (f, 
			"#ifndef %s%s\n#define %s%s \"%s\"\n#endif\n",
			prefixstr, te->left, prefixstr, te->left, te->right);
	    } else {
		(void) fprintf (f, 
			"#define %s%s \"%s\"\n",
			prefixstr, te->left, te->right);
	    }
	}
    (void) fprintf (f, "%s", "#else\n");
}

static void
IntelABIWriteHeader (FILE* f, File* phile)
{
    Table* t;
    TableEnt* te;

    WriteHeaderProlog (f, phile);

    for (t = phile->table; t; t = t->next) {
      (void) fprintf (f, "%s %sConst char %s[];\n", 
		      externrefstr, conststr ? conststr : fileprotstr, t->name);
	for (te = t->tableent; te; te = te->next)
	    (void) fprintf (f, 
		"#ifndef %s%s\n#define %s%s ((char*)&%s[%d])\n#endif\n",
		prefixstr, te->left, prefixstr, te->left, t->name, te->offset);
    }

    (void) fprintf (f, "#endif /* %s */\n", featurestr);
}

static void
SPARCABIWriteHeader (FILE* f, File* phile)
{
    Table* t;
    TableEnt* te;

    for (t = phile->table; t; t = t->next)
	for (te = t->tableent; te; te = te->next)
	    (void) fprintf (f, "#define %s%s \"%s\"\n",
			    prefixstr, te->left, te->right);
}

static void
FunctionWriteHeader (FILE* f, File* phile)
{
    Table* t;
    TableEnt* te;

    WriteHeaderProlog (f, phile);

    (void) fprintf (f, "%s %sConst char* %s();\n", 
		    externrefstr, conststr ? conststr : fileprotstr, 
		    phile->table->name);

    for (t = phile->table; t; t = t->next)
	for (te = t->tableent; te; te = te->next)
	    (void) fprintf (f, 
		"#ifndef %s%s\n#define %s%s (%s(%d))\n#endif\n",
		prefixstr, te->left, prefixstr, te->left, phile->table->name, 
		te->offset);

    (void) fprintf (f, "#endif /* %s */\n", featurestr);
}

static void
ArrayperWriteHeader (FILE* f, File* phile)
{
    Table* t;
    TableEnt* te;

    WriteHeaderProlog (f, phile);

    for (t = phile->table; t; t = t->next)
        for (te = t->tableent; te; te = te->next)
	    (void) fprintf (f, 
			    "#ifndef %s%s\n%s %sConst char %s%s[];\n#endif\n",
			    prefixstr, te->left, 
			    externrefstr, conststr ? conststr : fileprotstr, 
			    prefixstr, te->left);

    (void) fprintf (f, "#endif /* %s */\n", featurestr);
}

static void
DefaultWriteHeader (FILE* f, File* phile)
{
    Table* t;
    TableEnt* te;

    WriteHeaderProlog (f, phile);

    (void) fprintf (f, "%s %sConst char %s[];\n", 
		    externrefstr, conststr ? conststr : fileprotstr, 
		    phile->table->name);

    for (t = phile->table; t; t = t->next)
	for (te = t->tableent; te; te = te->next)
	    (void) fprintf (f, 
		"#ifndef %s%s\n#define %s%s ((char*)&%s[%d])\n#endif\n",
		prefixstr, te->left, prefixstr, te->left, phile->table->name, 
		te->offset);

    (void) fprintf (f, "#endif /* %s */\n", featurestr);
}

static void
CopyTmplProlog (FILE* tmpl, FILE* f)
{
    char buf[1024];
    static char* magic_string = X_MAGIC_STRING;
    int magic_string_len = strlen (magic_string);

    while (fgets (buf, sizeof buf, tmpl)) {
	if (strncmp (buf, magic_string, magic_string_len) == 0) {
	    return;
	}
	(void) fputs (buf, f);
    }
}

static void
CopyTmplEpilog (FILE* tmpl, FILE* f)
{
    char buf[1024];

    while (fgets (buf, sizeof buf, tmpl))
	(void) fputs (buf, f);
}

static char* abistring[] = {
   "Default", "Array per string", "Intel", "Intel BC", "SPARC", "Function" };

static void
WriteHeader (char* tagline, File* phile, int abi)
{
    FILE* f;
    char* tmp;
    Table* t;
    TableEnt* te;
    static void (*headerproc[])() = { DefaultWriteHeader, ArrayperWriteHeader,
	                                  IntelABIWriteHeader, IntelABIWriteHeader,
	                                  SPARCABIWriteHeader, FunctionWriteHeader };

    if ((f = fopen (phile->name, "w+")) == NULL) exit (1);

    if (phile->tmpl) CopyTmplProlog (phile->tmpl, f);

    (void) fprintf (f, 
	"%s\n%s\n/* %s ABI version -- Do not edit */\n", 
	"/* $TOG: makestrs.c /main/11 1998/02/06 11:24:15 kaleb $ */",
	"/* This file is automatically generated. */",
	abistring[abi]);

    if (tagline) (void) fprintf (f, "/* %s */\n\n", tagline);

    /* do the right thing for Motif, i.e. avoid _XmXmStrDefs_h_ */
    if (strcmp (prefixstr, "Xm") == 0) {
	if ((fileprotstr = malloc (strlen (phile->name) + 3)) == NULL)
	   exit (1);
	(void) sprintf (fileprotstr, "_%s_", phile->name);
    } else {
	if ((fileprotstr = malloc (strlen (phile->name) + strlen (prefixstr) +  3)) == NULL)
	   exit (1);
	(void) sprintf (fileprotstr, "_%s%s_", prefixstr, phile->name);
    }

    for (tmp = fileprotstr; *tmp; tmp++) if (*tmp == '.') *tmp = '_';

    (*headerproc[abi])(f, phile);

    if (phile->tmpl) CopyTmplEpilog (phile->tmpl, f);

    (void) free (fileprotstr);
    (void) fclose (phile->tmpl);
    (void) fclose (f);
}

static void
WriteSourceLine (TableEnt* te, int abi, int fudge)
{
    char* c;

    for (c = te->right; *c; c++) (void) printf ("'%c',", *c);
    (void) printf ("%s", "'\\0'");
    if (te->next || fudge) (void) printf ("%c", ',');
    (void) printf ("%s", "\n");
}

static char* const_string = "%s %sConst char %s[] = {\n";

static void
IntelABIWriteSource (int abi)
{
    File* phile;

    for (phile = file; phile; phile = phile->next) {
	Table* t;
	TableEnt* te;

	for (t = phile->table; t; t = t->next) {
	    (void) printf (const_string, externdefstr, 
			   conststr ? conststr : "", t->name);
	    for (te = t->tableent; te; te = te->next)
		WriteSourceLine (te, abi, 0);
	    (void) printf ("%s\n\n", "};");
	}
    }
}

static void
IntelABIBCWriteSource (int abi)
{
    File* phile;

    for (phile = file; phile; phile = phile->next) {
	Table* t;
	TableEnt* te;

	(void) printf (const_string, externdefstr, 
		       conststr ? conststr : "", phile->table->name);

	for (t = phile->table; t; t = t->next) 
	    for (te = t->tableent; te; te = te->next)
		WriteSourceLine (te, abi, t->next ? 1 : 0);
	(void) printf ("%s\n\n", "};");

	if (phile->table->next) {
	    (void) printf (const_string, externdefstr, 
			   conststr ? conststr : "", phile->table->next->name);
	    for (t = phile->table->next; t; t = t->next) 
		for (te = t->tableent; te; te = te->next)
		    WriteSourceLine (te, abi, 0);
	    (void) printf ("%s\n\n", "};");
	}
    }
}

static void
FunctionWriteSource (int abi)
{
    File* phile;

    for (phile = file; phile; phile = phile->next) {
	Table* t;
	TableEnt* te;

	(void) printf ("static %sConst char _%s[] = {\n", 
		       conststr ? conststr : "", phile->table->name);

	for (t = phile->table; t; t = t->next) 
	    for (te = t->tableent; te; te = te->next)
		    WriteSourceLine (te, abi, t->next ? 1 : 0);
	(void) printf ("%s\n\n", "};");

	(void) printf ("%sConst char* %s(index)\n    int index;\n{\n    return &_%s[index];\n}\n\n",
		       conststr ? conststr : "", 
		       phile->table->name, phile->table->name);
    }
}

static void
ArrayperWriteSource (int abi)
{
    File* phile;
    static int done_atom;

    for (phile = file; phile; phile = phile->next) {
	Table* t;
	TableEnt* te;

	for (t = phile->table; t; t = t->next) 
	    for (te = t->tableent; te; te = te->next) {
		if (strcmp (te->left, "RAtom") == 0) {
		    if (done_atom) return;
		    done_atom = 1;
		}
		(void) printf ("%s %sConst char %s%s[] = \"%s\";\n",
			       externdefstr, conststr ? conststr : "", 
			       prefixstr, te->left, te->right);
	    }
    }
}

static void
DefaultWriteSource (int abi)
{
    File* phile;

    for (phile = file; phile; phile = phile->next) {
	Table* t;
	TableEnt* te;

	(void) printf (const_string, externdefstr, conststr ? conststr : "",
		       phile->table->name);

	for (t = phile->table; t; t = t->next) 
	    for (te = t->tableent; te; te = te->next)
		WriteSourceLine (te, abi, t->next ? 1 : 0);
	(void) printf ("%s\n\n", "};");
    }
}

static void
WriteSource(char* tagline, int abi)
{
    static void (*sourceproc[])() = { 
	DefaultWriteSource, ArrayperWriteSource,
	IntelABIWriteSource, IntelABIBCWriteSource,
	DefaultWriteSource, FunctionWriteSource };

    FILE* tmpl;

    if (ctmplstr) {
	tmpl = fopen (ctmplstr, "r");

	if (tmpl) CopyTmplProlog (tmpl, stdout);
	else {
	    (void) fprintf (stderr, "Expected template %s, not found\n",
			    ctmplstr);
	    exit (1);
	}
    } else
	tmpl = NULL;

    (void) printf ("%s\n%s\n/* %s ABI version -- Do not edit */\n", 
		   "/* $TOG: makestrs.c /main/11 1998/02/06 11:24:15 kaleb $ */",
		   "/* This file is automatically generated. */",
		   abistring[abi]);

    if (tagline) (void) printf ("/* %s */\n\n", tagline);

    (*sourceproc[abi])(abi);

    if (tmpl) {
        CopyTmplEpilog (tmpl, stdout);
        fclose(tmpl);
    }
}

static void
DoLine(char* buf)
{
#define X_NO_TOKEN 0
#define X_FILE_TOKEN 1
#define X_TABLE_TOKEN 2
#define X_PREFIX_TOKEN 3
#define X_FEATURE_TOKEN 4
#define X_EXTERNREF_TOKEN 5
#define X_EXTERNDEF_TOKEN 6
#define X_CTMPL_TOKEN 7
#define X_HTMPL_TOKEN 8
#define X_CONST_TOKEN 9

    int token;
    char lbuf[1024];
    static char* file_str = "#file";
    static char* table_str = "#table";
    static char* prefix_str = "#prefix";
    static char* feature_str = "#feature";
    static char* externref_str = "#externref";
    static char* externdef_str = "#externdef";
    static char* ctmpl_str = "#ctmpl";
    static char* htmpl_str = "#htmpl";
    static char* const_str = "#const";

    if (strncmp (buf, file_str, strlen (file_str)) == 0) 
	token = X_FILE_TOKEN;
    else if (strncmp (buf, table_str, strlen (table_str)) == 0) 
	token = X_TABLE_TOKEN;
    else if (strncmp (buf, prefix_str, strlen (prefix_str)) == 0) 
	token = X_PREFIX_TOKEN;
    else if (strncmp (buf, feature_str, strlen (feature_str)) == 0) 
	token = X_FEATURE_TOKEN;
    else if (strncmp (buf, externref_str, strlen (externref_str)) == 0) 
	token = X_EXTERNREF_TOKEN;
    else if (strncmp (buf, externdef_str, strlen (externdef_str)) == 0) 
	token = X_EXTERNDEF_TOKEN;
    else if (strncmp (buf, ctmpl_str, strlen (ctmpl_str)) == 0) 
	token = X_CTMPL_TOKEN;
    else if (strncmp (buf, htmpl_str, strlen (htmpl_str)) == 0) 
	token = X_HTMPL_TOKEN;
    else if (strncmp (buf, const_str, strlen (const_str)) == 0) 
	token = X_CONST_TOKEN;
    else
        token = X_NO_TOKEN;

    switch (token) {
    case X_FILE_TOKEN:
	{
	    File* phile;

	    if ((phile = (File*) malloc (sizeof(File))) == NULL) 
		exit(1);
	    if ((phile->name = malloc (strlen (buf + strlen (file_str)) + 1)) == NULL) 
		exit(1);
	    (void) strcpy (phile->name, buf + strlen (file_str) + 1);
	    phile->table = NULL;
	    phile->tablecurrent = NULL;
	    phile->tabletail = &phile->table;
	    phile->next = NULL;
	    phile->tmpl = NULL;

	    *filetail = phile;
	    filetail = &phile->next;
	    filecurrent = phile;
	}
	break;
    case X_TABLE_TOKEN:
	{
	    Table* table;
	    if ((table = (Table*) malloc (sizeof(Table))) == NULL) 
		exit(1);
	    if ((table->name = malloc (strlen (buf + strlen (table_str)) + 1)) == NULL) 
		exit(1);
	    (void) strcpy (table->name, buf + strlen (table_str) + 1);
	    table->tableent = NULL;
	    table->tableentcurrent = NULL;
	    table->tableenttail = &table->tableent;
	    table->next = NULL;
	    table->offset = 0;

	    *filecurrent->tabletail = table;
	    filecurrent->tabletail = &table->next;
	    filecurrent->tablecurrent = table;
	}
	break;
    case X_PREFIX_TOKEN:
	if ((prefixstr = malloc (strlen (buf + strlen (prefix_str)) + 1)) == NULL) 
	    exit(1);
	(void) strcpy (prefixstr, buf + strlen (prefix_str) + 1);
	break;
    case X_FEATURE_TOKEN:
	if ((featurestr = malloc (strlen (buf + strlen (feature_str)) + 1)) == NULL) 
	    exit(1);
	(void) strcpy (featurestr, buf + strlen (feature_str) + 1);
	break;
    case X_EXTERNREF_TOKEN:
	if ((externrefstr = malloc (strlen (buf + strlen (externref_str)) + 1)) == NULL) 
	    exit(1);
	(void) strcpy (externrefstr, buf + strlen (externref_str) + 1);
	break;
    case X_EXTERNDEF_TOKEN:
	if ((externdefstr = malloc (strlen (buf + strlen (externdef_str)) + 1)) == NULL) 
	    exit(1);
	(void) strcpy (externdefstr, buf + strlen (externdef_str) + 1);
	break;
    case X_CTMPL_TOKEN:
	if ((ctmplstr = malloc (strlen (buf + strlen (ctmpl_str)) + 1)) == NULL) 
	    exit(1);
	(void) strcpy (ctmplstr, buf + strlen (ctmpl_str) + 1);
	break;
    case X_HTMPL_TOKEN:
	if ((filecurrent->tmpl = fopen (buf + strlen (htmpl_str) + 1, "r")) == NULL) {
	    (void) fprintf (stderr, 
			    "Expected template %s, not found\n", htmpl_str);
	    exit (1);
	}
	break;
    case X_CONST_TOKEN:
	if ((conststr = malloc (strlen (buf + strlen (const_str)) + 1)) == NULL)
	    exit(1);
	(void) strcpy (conststr, buf + strlen (const_str) + 1);
	break;
    default:
	{
	    char* right;
	    TableEnt* tableent;
	    int llen;
	    int rlen;
	    int len;

	    if ((right = index(buf, ' ')))
		    *right++ = 0;
	    else
		    right = buf + 1;
	    if (buf[0] == 'H') {
		    strcpy (lbuf, prefixstr);
		    strcat (lbuf, right);
		    right = lbuf;
	    }

	    llen = len = strlen(buf) + 1;
	    rlen = strlen(right) + 1;
	    if (right != buf + 1) len += rlen;
	    if ((tableent = (TableEnt*)malloc(sizeof(TableEnt) + len)) == NULL)
		exit(1);
	    tableent->left = (char *)(tableent + 1);
	    strcpy(tableent->left, buf);
	    if (llen != len) {
		tableent->right = tableent->left + llen;
		strcpy(tableent->right, right);
	    } else {
		tableent->right = tableent->left + 1;
	    }
	    tableent->next = NULL;

	    *filecurrent->tablecurrent->tableenttail = tableent;
	    filecurrent->tablecurrent->tableenttail = &tableent->next;
	    filecurrent->tablecurrent->tableentcurrent = tableent;
	}
	break;
    }
}

static void
IntelABIIndexEntries (File* file)
{
    Table* t;
    TableEnt* te;

    for (t = file->table; t; t = t->next)
	for (te = t->tableent; te; te = te->next) {
	    te->offset = t->offset;
	    t->offset += strlen (te->right);
	    t->offset++;
    }
}

static void
DefaultIndexEntries (File* file)
{
    Table* t;
    TableEnt* te;
    int offset = 0;

    for (t = file->table; t; t = t->next)
	for (te = t->tableent; te; te = te->next) {
	    te->offset = offset;
	    offset += strlen (te->right);
	    offset++;
    }
}

static void
IndexEntries (File* file, int abi)
{
    switch (abi) {
    case X_SPARC_ABI:
	break;
    case X_INTEL_ABI:
    case X_INTEL_ABI_BC:
	IntelABIIndexEntries (file);
	break;
    default:
	DefaultIndexEntries (file);
	break;
    }
}

static char*
DoComment (char* line)
{
    char* tag;
    char* eol;
    char* ret;
    int len;

    /* assume that the first line with two '$' in it is the RCS tag line */
    if ((tag = index (line, '$')) == NULL) return NULL;
    if ((eol = index (tag + 1, '$')) == NULL) return NULL;
    len = eol - tag;
    if ((ret = malloc (len)) == NULL)
	exit (1);
    (void) strncpy (ret, tag + 1, len - 1);
    ret[len - 2] = 0;
    return ret;
}

int
main(int argc, char *argv[])
{
    int len, i;
    char* tagline = NULL;
    File* phile;
    FILE *f;
    char buf[1024];
    int abi = 
#ifndef ARRAYPERSTR
	X_DEFAULT_ABI;
#else
	X_ARRAYPER_ABI;
#endif

    f = stdin;
    if (argc > 1) {
	for (i = 1; i < argc; i++) {
	    if (strcmp (argv[i], "-f") == 0) {
		if (++i < argc)
		    f = fopen (argv[i], "r");
		else
		    return 1;
	    }
	    if (strcmp (argv[i], "-sparcabi") == 0)
		abi = X_SPARC_ABI;
	    if (strcmp (argv[i], "-intelabi") == 0)
		abi = X_INTEL_ABI;
	    if (strcmp (argv[i], "-functionabi") == 0)
		abi = X_FUNCTION_ABI;
	    if (strcmp (argv[i], "-earlyR6bc") == 0 && (abi == X_INTEL_ABI))
		abi = X_INTEL_ABI_BC;
	    if (strcmp (argv[i], "-arrayperabi") == 0)
		abi = X_ARRAYPER_ABI;
#ifdef ARRAYPERSTR
	    if (strcmp (argv[i], "-defaultabi") == 0)
		abi = X_DEFAULT_ABI;
#endif
	}
    }

    if (f == NULL) return 1;
    while (fgets(buf, sizeof(buf), f)) {
	if (!buf[0] || buf[0] == '\n') 
	    continue;
	if (buf[0] == '!') {
	    if (tagline) continue;
	    tagline = DoComment (buf);
	    continue;
	}
	if (buf[(len = strlen (buf) - 1)] == '\n') buf[len] = '\0';
	DoLine(buf);
    }
    for (phile = file; phile; phile = phile->next) {
	if (abi != X_ARRAYPER_ABI) IndexEntries (phile, abi);
	WriteHeader (tagline, phile, abi);
    }
    WriteSource(tagline, abi);
    return 0;
}

