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remove TIMESTAMP abstraction layer, prodded by theo.
while there, clean up includes.
use strtoll for ar timestamps (pretty much unused in reality, more
standard conforming than anything)

use idea from Todd to adapt to time_t being 32 bits OR 64 bits
(pedantically correct: INT_MIN would work just fine up to 1910 or so...)

okay millert@, gone thru a make build.

/* $OpenBSD: dump.c,v 1.4 2013/04/23 14:32:53 espie Exp $ */
/*
 * Copyright (c) 2012 Marc Espie.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OPENBSD
 * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include <limits.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ohash.h>
#include "defines.h"
#include "gnode.h"
#include "dump.h"
#include "targ.h"
#include "var.h"
#include "memory.h"
#include "suff.h"
#include "lst.h"
#include "timestamp.h"
#include "dir.h"

/* since qsort doesn't have user data, this needs to be a global... */
static ptrdiff_t cmp_offset;
static void targ_dump(bool);

static int 
compare_names(const void *a, const void *b)
{
	const char **pa = (const char **)a;
	const char **pb = (const char **)b;
	return strcmp((*pa) + cmp_offset, (*pb) + cmp_offset);
}

void *
sort_ohash_by_name(struct ohash *h)
{
	cmp_offset = h->info.key_offset;

	return sort_ohash(h, compare_names);
}

void *
sort_ohash(struct ohash *h, int (*comparison)(const void *, const void *))
{
	unsigned int i, j;
	void *e;
	size_t n = ohash_entries(h);
	void **t = emalloc(sizeof(void *) * (n+1));
	cmp_offset = h->info.key_offset;

	for (i = 0, e = ohash_first(h, &j); e != NULL; e = ohash_next(h, &j))
	    	t[i++] = e;
	qsort(t, n, sizeof(void *), comparison);
	/* add an extra entry to be able to figure out the end without needing
	 * to keep a counter */
	t[n] = NULL;
	return t;
}

static void
TargPrintName(void *gnp)
{
	GNode *gn = (GNode *)gnp;
	printf("%s ", gn->name);
}

static void
TargPrintOnlySrc(GNode *gn)
{
	if (OP_NOP(gn->type) && gn->special == SPECIAL_NONE &&
	    !(gn->type & OP_DUMMY)) {
	    	if (gn->path != NULL)
			printf("#\t%s [%s]\n", gn->name, 
			    strcmp(gn->path, gn->name) == 0 ? "=" : gn->path);
		else
			printf("#\t%s\n", gn->name);
    	}
}

static void
TargPrintNode(GNode *gn, bool full)
{
	if (OP_NOP(gn->type))
		return;
	switch((gn->special & SPECIAL_MASK)) {
	case SPECIAL_SUFFIXES:
	case SPECIAL_PHONY:
	case SPECIAL_ORDER:
	case SPECIAL_NOTHING:
	case SPECIAL_MAIN:
	case SPECIAL_IGNORE:
		return;
	default:
		break;
	}
	if (full) {
		printf("# %d unmade prerequisites\n", gn->unmade);
		if (! (gn->type & (OP_JOIN|OP_USE|OP_EXEC))) {
			if (!is_out_of_date(gn->mtime)) {
				printf("# last modified %s: %s\n",
				      time_to_string(gn->mtime),
				      status_to_string(gn));
			} else if (gn->built_status != UNKNOWN) {
				printf("# non-existent (maybe): %s\n",
				    status_to_string(gn));
			} else {
				printf("# unmade\n");
			}
		}
	}
	if (!Lst_IsEmpty(&gn->parents)) {
		printf("# parent targets: ");
		Lst_Every(&gn->parents, TargPrintName);
		fputc('\n', stdout);
	}
	if (gn->impliedsrc)
		printf("# implied prerequisite: %s\n", gn->impliedsrc->name);

	printf("%-16s", gn->name);
	switch (gn->type & OP_OPMASK) {
	case OP_DEPENDS:
		printf(": "); break;
	case OP_FORCE:
		printf("! "); break;
	case OP_DOUBLEDEP:
		printf(":: "); break;
	}
	Targ_PrintType(gn->type);
	Lst_Every(&gn->children, TargPrintName);
	fputc('\n', stdout);
	Lst_Every(&gn->commands, Targ_PrintCmd);
	printf("\n\n");
	if (gn->type & OP_DOUBLEDEP) {
		LstNode ln;

		for (ln = Lst_First(&gn->cohorts); ln != NULL; ln = Lst_Adv(ln))
			TargPrintNode((GNode *)Lst_Datum(ln), full);
	}
}

static void
dump_special(GNode **t, const char *name, int prop)
{
	unsigned int i;
	bool first = true;

	for (i = 0; t[i] != NULL; i++)
		if (t[i]->type & prop) {
			if (first) {
				printf("%s:", name);
				first = false;
			}
			printf(" %s", t[i]->name);
	    	}
	if (!first)
		printf("\n\n");
}

static void
targ_dump(bool full)
{
	GNode **t = sort_ohash_by_name(targets_hash());
	unsigned int i;

	printf("#   Input graph:\n");
	for (i = 0; t[i] != NULL; i++)
		TargPrintNode(t[i], full);
	printf("\n\n");

	dump_special(t, ".PHONY", OP_PHONY);
	dump_special(t, ".PRECIOUS", OP_PRECIOUS);
	dump_special(t, ".SILENT", OP_SILENT);
	dump_special(t, ".IGNORE", OP_IGNORE);
	printf("#   Other target names:\n");
	for (i = 0; t[i] != NULL; i++)
		TargPrintOnlySrc(t[i]);
	printf("\n");
	free(t);
}

static bool dumped_once = false;

void
dump_data(void)
{
	Var_Dump();
	Suff_PrintAll();
	targ_dump(false);
	dumped_once = true;
}

void
post_mortem(void)
{
	if (!dumped_once) {
		Var_Dump();
		Suff_PrintAll();
	}
	targ_dump(true);
}