-#include "talloc/talloc.h"
+#include <ccan/talloc/talloc.h>
+#include <ccan/str/str.h>
+#include <ccan/grab_file/grab_file.h>
+#include <ccan/str_talloc/str_talloc.h>
#include "tools.h"
#include <err.h>
+#include <stdbool.h>
+#include <unistd.h>
-static char ** __attribute__((format(printf, 2, 3)))
-lines_from_cmd(const void *ctx, char *format, ...)
+static char ** __attribute__((format(printf, 3, 4)))
+lines_from_cmd(const void *ctx, unsigned int *num, char *format, ...)
{
va_list ap;
char *cmd, *buffer;
if (!p)
err(1, "Executing '%s'", cmd);
- buffer = grab_fd(ctx, fileno(p));
+ buffer = grab_fd(ctx, fileno(p), NULL);
if (!buffer)
err(1, "Reading from '%s'", cmd);
pclose(p);
- return split(ctx, buffer, "\n", NULL);
+ return strsplit(ctx, buffer, "\n", num);
}
-static char *build_info(const void *ctx, const char *dir)
+static int unlink_info(char *infofile)
{
- char *file, *cfile, *cmd;
+ unlink(infofile);
+ return 0;
+}
- cfile = talloc_asprintf(ctx, "%s/%s", dir, "_info.c");
- file = talloc_asprintf(cfile, "%s/%s", dir, "_info");
- cmd = talloc_asprintf(file, "gcc " CFLAGS " -o %s %s", file, cfile);
+/* Be careful about trying to compile over running programs (parallel make) */
+static char *compile_info(const void *ctx, const char *dir)
+{
+ char *infofile = talloc_asprintf(ctx, "%s/_info.%u", dir, getpid());
+ char *cmd = talloc_asprintf(ctx, "cc " CFLAGS " -o %s %s/_info.c",
+ infofile, dir);
+ talloc_set_destructor(infofile, unlink_info);
if (system(cmd) != 0)
- errx(1, "Failed to compile %s", file);
+ return NULL;
- return file;
+ return infofile;
}
-char **get_deps(const void *ctx, const char *dir)
+static char **get_one_deps(const void *ctx, const char *dir, unsigned int *num)
{
- char **deps, *cmd;
+ char **deps, *cmd, *infofile;
+
+ infofile = compile_info(ctx, dir);
+ if (!infofile)
+ errx(1, "Could not compile _info for '%s'", dir);
- cmd = talloc_asprintf(ctx, "%s depends", build_info(ctx, dir));
- deps = lines_from_cmd(cmd, cmd);
+ cmd = talloc_asprintf(ctx, "%s depends", infofile);
+ deps = lines_from_cmd(cmd, num, "%s", cmd);
if (!deps)
err(1, "Could not run '%s'", cmd);
return deps;
}
+/* Make copy of src, replacing "from" with "to". */
+static char *replace(const void *ctx, const char *src,
+ const char *from, const char *to)
+{
+ char *ret = talloc_strdup(ctx, "");
+ unsigned int rlen, len, add;
+
+ rlen = len = 0;
+ for (;;) {
+ const char *next = strstr(src+len, from);
+ if (!next)
+ add = strlen(src+len) + 1;
+ else
+ add = next - (src+len);
+
+ ret = talloc_realloc(ctx, ret, char, rlen + add + strlen(to)+1);
+ memcpy(ret+rlen, src+len, add);
+ if (!next)
+ return ret;
+ len += add;
+ rlen += add;
+ strcpy(ret+rlen, to);
+ rlen += strlen(to);
+ len += strlen(from);
+ }
+}
+
+/* This is a terrible hack. We scan for ccan/ strings. */
+static char **get_one_safe_deps(const void *ctx,
+ const char *dir, unsigned int *num)
+{
+ char **deps, **lines, *raw, *fname;
+ unsigned int i, n = 0;
+
+ fname = talloc_asprintf(ctx, "%s/_info.c", dir);
+ raw = grab_file(fname, fname, NULL);
+ if (!raw)
+ errx(1, "Could not open %s", fname);
+
+ /* Replace \n by actual line breaks, and split it. */
+ lines = strsplit(raw, replace(raw, raw, "\\n", "\n"), "\n", &n);
+
+ deps = talloc_array(ctx, char *, n+1);
+
+ for (n = i = 0; lines[i]; i++) {
+ char *str;
+ unsigned int len;
+
+ /* Start of line, or after ". */
+ if (strstarts(lines[i], "ccan/"))
+ str = lines[i];
+ else {
+ str = strstr(lines[i], "\"ccan/");
+ if (!str)
+ continue;
+ str++;
+ }
+
+ len = strspn(str, "/abcdefghijklmnopqrstuvxwyz12345678980_");
+ if (len == 5)
+ continue;
+ deps[n++] = talloc_strndup(deps, str, len);
+ }
+ deps[n] = NULL;
+ talloc_free(fname);
+ if (num)
+ *num = n;
+ return deps;
+}
+
+static bool have_dep(char **deps, unsigned int num, const char *dep)
+{
+ unsigned int i;
+
+ for (i = 0; i < num; i++)
+ if (streq(deps[i], dep))
+ return true;
+ return false;
+}
+
+/* Gets all the dependencies, recursively. */
+static char **
+get_all_deps(const void *ctx, const char *dir,
+ char **(*get_one)(const void *, const char *, unsigned int *))
+{
+ char **deps;
+ unsigned int i, num;
+
+ deps = get_one(ctx, dir, &num);
+ for (i = 0; i < num; i++) {
+ char **newdeps;
+ unsigned int j, newnum;
+
+ if (!strstarts(deps[i], "ccan/"))
+ continue;
+
+ newdeps = get_one(ctx, deps[i], &newnum);
+
+ /* Should be short, so brute-force out dups. */
+ for (j = 0; j < newnum; j++) {
+ if (have_dep(deps, num, newdeps[j]))
+ continue;
+
+ deps = talloc_realloc(NULL, deps, char *, num + 2);
+ deps[num++] = newdeps[j];
+ deps[num] = NULL;
+ }
+ }
+ return deps;
+}
+
+char **get_deps(const void *ctx, const char *dir, bool recurse)
+{
+ if (!recurse) {
+ unsigned int num;
+ return get_one_deps(ctx, dir, &num);
+ }
+ return get_all_deps(ctx, dir, get_one_deps);
+}
+
+char **get_safe_ccan_deps(const void *ctx, const char *dir, bool recurse)
+{
+ if (!recurse) {
+ unsigned int num;
+ return get_one_safe_deps(ctx, dir, &num);
+ }
+ return get_all_deps(ctx, dir, get_one_safe_deps);
+}
+
projects / ccan / blobdiff