1 #include <ccan/str/str.h>
2 #include <ccan/read_write_all/read_write_all.h>
3 #include <ccan/rbuf/rbuf.h>
4 #include <ccan/tal/path/path.h>
5 #include <ccan/tal/grab_file/grab_file.h>
6 #include <ccan/compiler/compiler.h>
7 #include <ccan/err/err.h>
16 static char ** PRINTF_FMT(2, 3)
17 lines_from_cmd(const void *ctx, const char *format, ...)
26 cmd = tal_vfmt(ctx, format, ap);
31 err(1, "Executing '%s'", cmd);
33 /* FIXME: Use rbuf_read_str(&in, '\n') rather than strsplit! */
34 rbuf_init(&in, fileno(p), tal_arr(ctx, char, 0), 0,
36 ret = rbuf_read_str(&in, 0);
38 err(1, "Reading from '%s'", cmd);
41 return tal_strsplit(ctx, ret, "\n", STR_EMPTY_OK);
44 /* Be careful about trying to compile over running programs (parallel make).
45 * temp_file helps here. */
46 char *compile_info(const void *ctx, const char *dir)
48 char *info_c_file, *info, *compiled, *output;
51 /* Copy it to a file with proper .c suffix. */
52 info = grab_file(ctx, tal_fmt(ctx, "%s/_info", dir));
56 info_c_file = temp_file(ctx, ".c", "_info");
57 fd = open(info_c_file, O_WRONLY|O_CREAT|O_EXCL, 0600);
60 if (!write_all(fd, info, tal_count(info)-1)) {
68 compiled = temp_file(ctx, "", "info");
69 if (compile_and_link(ctx, info_c_file, find_ccan_dir(dir), "",
70 compiler, cflags, "", compiled, &output))
75 static char **get_one_deps(const void *ctx, const char *dir, const char *style,
76 char *(*get_info)(const void *ctx, const char *dir))
79 char *infofile = get_info(ctx, dir);
84 cmd = tal_fmt(ctx, "%s %s", infofile, style);
85 deps = lines_from_cmd(cmd, "%s", cmd);
87 /* You must understand depends, maybe not testdepends. */
88 if (streq(style, "depends"))
89 err(1, "Could not run '%s'", cmd);
90 deps = tal(ctx, char *);
96 /* Make copy of src, replacing "from" with "to". */
97 static char *replace(const void *ctx, const char *src,
98 const char *from, const char *to)
100 char *ret = tal_strdup(ctx, "");
101 unsigned int rlen, len, add;
105 const char *next = strstr(src+len, from);
107 add = strlen(src+len) + 1;
109 add = next - (src+len);
111 tal_resize(&ret, rlen + add + strlen(to)+1);
112 memcpy(ret+rlen, src+len, add);
117 strcpy(ret+rlen, to);
123 /* This is a terrible hack. We scan for ccan/ strings. */
124 static char **get_one_safe_deps(const void *ctx,
127 char *(*unused)(const void *, const char *))
129 char **deps, **lines, *raw, *fname;
131 bool correct_style = false;
133 fname = path_join(ctx, dir, "_info");
134 raw = grab_file(fname, fname);
136 errx(1, "Could not open %s", fname);
138 /* Replace \n by actual line breaks, and split it. */
139 lines = tal_strsplit(raw, replace(raw, raw, "\\n", "\n"), "\n",
142 deps = tal_arr(ctx, char *, tal_count(lines));
144 for (n = i = 0; lines[i]; i++) {
148 /* Ignore lines starting with # (e.g. #include) */
149 if (lines[i][0] == '#')
152 if (strstr(lines[i], "\"testdepends\""))
153 correct_style = streq(style, "testdepends");
154 else if (strstr(lines[i], "\"depends\""))
155 correct_style = streq(style, "depends");
160 /* Start of line, or after ". */
161 if (strstarts(lines[i], "ccan/"))
164 str = strstr(lines[i], "\"ccan/");
170 len = strspn(str, "/abcdefghijklmnopqrstuvxwyz12345678980_");
173 deps[n++] = tal_strndup(deps, str, len);
178 /* Make sure tal_array_length() works */
179 tal_resize(&deps, n + 1);
183 static bool have_dep(char **deps, const char *dep)
187 for (i = 0; deps[i]; i++)
188 if (streq(deps[i], dep))
195 /* Gets all the dependencies, recursively. */
197 get_all_deps(const void *ctx, const char *dir, const char *style,
198 char *(*get_info)(const void *ctx, const char *dir),
199 char **(*get_one)(const void *, const char *, const char *,
200 char *(*get_info)(const void *, const char *)))
205 deps = get_one(ctx, dir, style, get_info);
208 for (i = 0; i < tal_count(deps)-1; i++) {
213 if (!strstarts(deps[i], "ccan/"))
216 subdir = path_join(ctx, find_ccan_dir(dir), deps[i]);
217 newdeps = get_one(ctx, subdir, "depends", get_info);
219 /* Should be short, so brute-force out dups. */
220 for (j = 0; j < tal_count(newdeps)-1; j++) {
223 if (have_dep(deps, newdeps[j]))
226 num = tal_count(deps)-1;
227 tal_resize(&deps, num + 2);
228 deps[num] = newdeps[j];
235 /* Can return NULL: _info may not support prop. */
236 static char **get_one_prop(const void *ctx, const char *dir, const char *prop,
237 char *(*get_info)(const void *ctx, const char *dir))
241 cmd = tal_fmt(ctx, "%s %s", get_info(ctx, dir), prop);
242 lines = lines_from_cmd(cmd, "%s", cmd);
243 /* Strip final NULL. */
245 tal_resize(&lines, tal_count(lines)-1);
249 static char **get_one_libs(const void *ctx, const char *dir,
250 char *(*get_info)(const void *ctx, const char *dir))
252 return get_one_prop(ctx, dir, "libs", get_info);
255 static char **get_one_cflags(const void *ctx, const char *dir,
256 char *(*get_info)(const void *ctx, const char *dir))
258 return get_one_prop(ctx, dir, "cflags", get_info);
261 static char **get_one_ccanlint(const void *ctx, const char *dir,
262 char *(*get_info)(const void *ctx, const char *dir))
264 return get_one_prop(ctx, dir, "ccanlint", get_info);
267 /* O(n^2) but n is small. */
268 static char **add_deps(char **deps1, char **deps2)
272 len = tal_count(deps1);
274 for (i = 0; deps2[i]; i++) {
275 if (have_dep(deps1, deps2[i]))
277 tal_resize(&deps1, len + 1);
278 deps1[len-1] = tal_strdup(deps1, deps2[i]);
284 char **get_cflags(const void *ctx, const char *dir,
285 char *(*get_info)(const void *ctx, const char *dir))
289 flags = get_one_cflags(ctx, dir, get_info);
290 len = tal_count(flags);
291 tal_resize(&flags, len + 1);
296 char **get_ccanlint(const void *ctx, const char *dir,
297 char *(*get_info)(const void *ctx, const char *dir))
301 ccanlint = get_one_ccanlint(ctx, dir, get_info);
302 len = tal_count(ccanlint);
303 tal_resize(&ccanlint, len + 1);
304 ccanlint[len] = NULL;
308 static char *get_one_ported(const void *ctx, const char *dir,
309 char *(*get_info)(const void *ctx, const char *dir))
311 char **ported = get_one_prop(ctx, dir, "ported", get_info);
313 /* No news is good news. */
314 if (tal_count(ported) == 0)
317 if (tal_count(ported) != 1)
318 errx(1, "%s/_info ported gave %zu lines, not one",
319 dir, tal_count(ported));
321 if (streq(ported[0], ""))
327 char *get_ported(const void *ctx, const char *dir, bool recurse,
328 char *(*get_info)(const void *ctx, const char *dir))
332 msg = get_one_ported(ctx, dir, get_info);
338 char **deps = get_deps(ctx, dir, "depends", true, get_info);
339 for (i = 0; deps[i]; i++) {
341 if (!strstarts(deps[i], "ccan/"))
344 subdir = path_join(ctx, find_ccan_dir(dir), deps[i]);
345 msg = get_one_ported(ctx, subdir, get_info);
353 char **get_libs(const void *ctx, const char *dir, const char *style,
354 char *(*get_info)(const void *ctx, const char *dir))
359 libs = get_one_libs(ctx, dir, get_info);
360 len = tal_count(libs);
363 deps = get_deps(ctx, dir, style, true, get_info);
364 if (streq(style, "testdepends"))
365 deps = add_deps(deps,
366 get_deps(ctx, dir, "depends", true,
369 for (i = 0; deps[i]; i++) {
370 char **newlibs, *subdir;
373 if (!strstarts(deps[i], "ccan/"))
376 subdir = path_join(ctx, find_ccan_dir(dir), deps[i]);
378 newlibs = get_one_libs(ctx, subdir, get_info);
379 newlen = tal_count(newlibs);
380 tal_resize(&libs, len + newlen);
381 memcpy(&libs[len], newlibs,
382 sizeof(newlibs[0])*newlen);
387 /* Append NULL entry. */
388 tal_resize(&libs, len + 1);
393 /* FIXME: This is O(n^2), which is dumb. */
394 static char **uniquify_deps(char **deps)
396 unsigned int i, j, num;
401 num = tal_count(deps) - 1;
402 for (i = 0; i < num; i++) {
403 for (j = i + 1; j < num; j++) {
404 if (streq(deps[i], deps[j])) {
405 memmove(&deps[j], &deps[j+1],
406 (num - j - 1) * sizeof(char *));
412 /* Make sure tal_count() works */
413 tal_resize(&deps, num + 1);
417 char **get_deps(const void *ctx, const char *dir, const char *style,
419 char *(*get_info)(const void *ctx, const char *dir))
424 ret = get_one_deps(ctx, dir, style, get_info);
426 ret = get_all_deps(ctx, dir, style, get_info, get_one_deps);
428 return uniquify_deps(ret);
431 char **get_safe_ccan_deps(const void *ctx, const char *dir, const char *style,
436 ret = get_one_safe_deps(ctx, dir, style, NULL);
438 ret = get_all_deps(ctx, dir, style, NULL, get_one_safe_deps);
440 return uniquify_deps(ret);