summaryrefslogtreecommitdiffhomepage
path: root/src/driver/slbt_driver_ctx.c
blob: cdc309d168774fa9aad937ed8dc78e538ce6b519 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
/*******************************************************************/
/*  slibtool: a skinny libtool implementation, written in C        */
/*  Copyright (C) 2016  Z. Gilboa                                  */
/*  Released under the Standard MIT License; see COPYING.SLIBTOOL. */
/*******************************************************************/

#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>

#define ARGV_DRIVER

#include <slibtool/slibtool.h>
#include "slibtool_driver_impl.h"
#include "argv/argv.h"

struct slbt_driver_ctx_alloc {
	struct argv_meta *		meta;
	struct slbt_driver_ctx_impl	ctx;
	uint64_t			guard;
	const char *			units[];
};

static uint32_t slbt_argv_flags(uint32_t flags)
{
	uint32_t ret = 0;

	if (flags & SLBT_DRIVER_VERBOSITY_NONE)
		ret |= ARGV_VERBOSITY_NONE;

	if (flags & SLBT_DRIVER_VERBOSITY_ERRORS)
		ret |= ARGV_VERBOSITY_ERRORS;

	if (flags & SLBT_DRIVER_VERBOSITY_STATUS)
		ret |= ARGV_VERBOSITY_STATUS;

	return ret;
}

static int slbt_driver_usage(
	const char *			program,
	const char *			arg,
	const struct argv_option *	options,
	struct argv_meta *		meta)
{
	char header[512];

	snprintf(header,sizeof(header),
		"Usage: %s [options] <file>...\n" "Options:\n",
		program);

	argv_usage(stdout,header,options,arg);
	argv_free(meta);

	return SLBT_USAGE;
}

static struct slbt_driver_ctx_impl * slbt_driver_ctx_alloc(
	struct argv_meta *		meta,
	const struct slbt_common_ctx *	cctx,
	size_t				nunits)
{
	struct slbt_driver_ctx_alloc *	ictx;
	size_t				size;
	struct argv_entry *		entry;
	const char **			units;

	size =  sizeof(struct slbt_driver_ctx_alloc);
	size += (nunits+1)*sizeof(const char *);

	if (!(ictx = calloc(1,size)))
		return 0;

	if (cctx)
		memcpy(&ictx->ctx.cctx,cctx,sizeof(*cctx));

	for (entry=meta->entries,units=ictx->units; entry->fopt || entry->arg; entry++)
		if (!entry->fopt)
			*units++ = entry->arg;

	ictx->meta = meta;
	ictx->ctx.ctx.units = ictx->units;
	return &ictx->ctx;
}

static int slbt_get_driver_ctx_fail(struct argv_meta * meta)
{
	argv_free(meta);
	return -1;
}

int slbt_get_driver_ctx(
	char **				argv,
	char **				envp,
	uint32_t			flags,
	struct slbt_driver_ctx **	pctx)
{
	struct slbt_driver_ctx_impl *	ctx;
	struct slbt_common_ctx		cctx;
	const struct argv_option *	options;
	struct argv_meta *		meta;
	struct argv_entry *		entry;
	size_t				nunits;
	const char *			program;

	options = slbt_default_options;

	if (!(meta = argv_get(argv,options,slbt_argv_flags(flags))))
		return -1;

	nunits	= 0;
	program = argv_program_name(argv[0]);
	memset(&cctx,0,sizeof(cctx));

	if (!argv[1] && (flags & SLBT_DRIVER_VERBOSITY_USAGE))
		return slbt_driver_usage(program,0,options,meta);

	/* get options, count units */
	for (entry=meta->entries; entry->fopt || entry->arg; entry++) {
		if (entry->fopt) {
			switch (entry->tag) {
				case TAG_HELP:
				case TAG_HELP_ALL:
					if (flags & SLBT_DRIVER_VERBOSITY_USAGE)
						return slbt_driver_usage(program,entry->arg,options,meta);

				case TAG_VERSION:
					cctx.drvflags |= SLBT_DRIVER_VERSION;
					break;

				case TAG_MODE:
					if (!strcmp("clean",entry->arg))
						cctx.mode = SLBT_MODE_CLEAN;

					else if (!strcmp("compile",entry->arg))
						cctx.mode = SLBT_MODE_COMPILE;

					else if (!strcmp("execute",entry->arg))
						cctx.mode = SLBT_MODE_EXECUTE;

					else if (!strcmp("finish",entry->arg))
						cctx.mode = SLBT_MODE_FINISH;

					else if (!strcmp("install",entry->arg))
						cctx.mode = SLBT_MODE_INSTALL;

					else if (!strcmp("link",entry->arg))
						cctx.mode = SLBT_MODE_LINK;

					else if (!strcmp("uninstall",entry->arg))
						cctx.mode = SLBT_MODE_UNINSTALL;
					break;

				case TAG_DRY_RUN:
					cctx.drvflags |= SLBT_DRIVER_DRY_RUN;
					break;

				case TAG_TAG:
					if (!strcmp("CC",entry->arg))
						cctx.tag = SLBT_TAG_CC;

					else if (!strcmp("CXX",entry->arg))
						cctx.tag = SLBT_TAG_CXX;
					break;

				case TAG_CONFIG:
					cctx.drvflags |= SLBT_DRIVER_CONFIG;
					break;

				case TAG_DEBUG:
					cctx.drvflags |= SLBT_DRIVER_DEBUG;
					break;

				case TAG_FEATURES:
					cctx.drvflags |= SLBT_DRIVER_FEATURES;
					break;

				case TAG_WARNINGS:
					if (!strcmp("all",entry->arg))
						cctx.tag = SLBT_WARNING_LEVEL_ALL;

					else if (!strcmp("error",entry->arg))
						cctx.tag = SLBT_WARNING_LEVEL_ERROR;

					else if (!strcmp("none",entry->arg))
						cctx.tag = SLBT_WARNING_LEVEL_NONE;
					break;

				case TAG_DEPS:
					cctx.drvflags |= SLBT_DRIVER_DEPS;
					break;

				case TAG_SILENT:
					cctx.drvflags |= SLBT_DRIVER_SILENT;
					break;

				case TAG_VERBOSE:
					cctx.drvflags |= SLBT_DRIVER_VERBOSE;
					break;

				case TAG_OUTPUT:
					cctx.output = entry->arg;
					break;

				case TAG_PREFER_PIC:
					cctx.drvflags |= SLBT_DRIVER_PRO_PIC;
					break;

				case TAG_PREFER_NON_PIC:
					cctx.drvflags |= SLBT_DRIVER_ANTI_PIC;
					break;

				case TAG_SHARED:
					cctx.drvflags |= SLBT_DRIVER_SHARED;
					break;

				case TAG_STATIC:
					cctx.drvflags |= SLBT_DRIVER_STATIC;
					break;
			}
		} else
			nunits++;
	}

	if (!(ctx = slbt_driver_ctx_alloc(meta,&cctx,nunits)))
		return slbt_get_driver_ctx_fail(meta);

	ctx->ctx.program	= program;
	ctx->ctx.cctx		= &ctx->cctx;

	*pctx = &ctx->ctx;
	return SLBT_OK;
}

int slbt_create_driver_ctx(
	const struct slbt_common_ctx *	cctx,
	struct slbt_driver_ctx **	pctx)
{
	struct argv_meta *		meta;
	struct slbt_driver_ctx_impl *	ctx;
	char *				argv[] = {"slibtool_driver",0};

	if (!(meta = argv_get(argv,slbt_default_options,0)))
		return -1;

	if (!(ctx = slbt_driver_ctx_alloc(meta,cctx,0)))
		return slbt_get_driver_ctx_fail(0);

	ctx->ctx.cctx = &ctx->cctx;
	memcpy(&ctx->cctx,cctx,sizeof(*cctx));
	*pctx = &ctx->ctx;
	return SLBT_OK;
}

static void slbt_free_driver_ctx_impl(struct slbt_driver_ctx_alloc * ictx)
{
	argv_free(ictx->meta);
	free(ictx);
}

void slbt_free_driver_ctx(struct slbt_driver_ctx * ctx)
{
	struct slbt_driver_ctx_alloc *	ictx;
	uintptr_t			addr;

	if (ctx) {
		addr = (uintptr_t)ctx - offsetof(struct slbt_driver_ctx_alloc,ctx);
		addr = addr - offsetof(struct slbt_driver_ctx_impl,ctx);
		ictx = (struct slbt_driver_ctx_alloc *)addr;
		slbt_free_driver_ctx_impl(ictx);
	}
}