-#include <ccan/talloc/talloc.h>
#include <ccan/str/str.h>
+#include <ccan/talloc/talloc.h>
#include <ccan/grab_file/grab_file.h>
#include <ccan/str_talloc/str_talloc.h>
+#include <ccan/read_write_all/read_write_all.h>
+#include <ccan/compiler/compiler.h>
#include "tools.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
#include <err.h>
#include <stdbool.h>
#include <unistd.h>
+#include <errno.h>
-static char ** __attribute__((format(printf, 3, 4)))
-lines_from_cmd(const void *ctx, unsigned int *num, char *format, ...)
+static char ** PRINTF_FMT(2, 3)
+lines_from_cmd(const void *ctx, const char *format, ...)
{
va_list ap;
char *cmd, *buffer;
err(1, "Reading from '%s'", cmd);
pclose(p);
- return strsplit(ctx, buffer, "\n", num);
+ return strsplit(ctx, buffer, "\n");
}
-static int unlink_info(char *infofile)
+/* Be careful about trying to compile over running programs (parallel make).
+ * temp_file helps here. */
+char *compile_info(const void *ctx, const char *dir)
{
- unlink(infofile);
- return 0;
-}
+ char *info_c_file, *info, *ccandir, *compiled, *output;
+ size_t len;
+ int fd;
-/* 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 -x c %s/_info",
- infofile, dir);
- talloc_set_destructor(infofile, unlink_info);
- if (system(cmd) != 0)
+ /* Copy it to a file with proper .c suffix. */
+ info = grab_file(ctx, talloc_asprintf(ctx, "%s/_info", dir), &len);
+ if (!info)
+ return NULL;
+
+ info_c_file = temp_file(ctx, ".c", "_info");
+ fd = open(info_c_file, O_WRONLY|O_CREAT|O_EXCL, 0600);
+ if (fd < 0)
+ return NULL;
+ if (!write_all(fd, info, len))
+ return NULL;
+
+ if (close(fd) != 0)
return NULL;
- return infofile;
+ ccandir = talloc_dirname(ctx, dir);
+ if (strrchr(ccandir, '/'))
+ *strrchr(ccandir, '/') = '\0';
+
+ compiled = temp_file(ctx, "", "info");
+ if (compile_and_link(ctx, info_c_file, ccandir, "",
+ CCAN_COMPILER, CCAN_CFLAGS " -I.", "",
+ compiled, &output))
+ return compiled;
+ return NULL;
}
-static char **get_one_deps(const void *ctx, const char *dir, unsigned int *num)
+static char **get_one_deps(const void *ctx, const char *dir,
+ char *(*get_info)(const void *ctx, const char *dir))
{
- char **deps, *cmd, *infofile;
+ char **deps, *cmd;
+ char *infofile = get_info(ctx, dir);
- infofile = compile_info(ctx, dir);
if (!infofile)
- errx(1, "Could not compile _info for '%s'", dir);
+ return NULL;
cmd = talloc_asprintf(ctx, "%s depends", infofile);
- deps = lines_from_cmd(cmd, num, "%s", cmd);
+ deps = lines_from_cmd(cmd, "%s", cmd);
if (!deps)
err(1, "Could not run '%s'", cmd);
return deps;
/* 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)
+ const char *dir,
+ char *(*unused)(const void *, const char *))
{
char **deps, **lines, *raw, *fname;
- unsigned int i, n = 0;
+ unsigned int i, n;
fname = talloc_asprintf(ctx, "%s/_info", dir);
raw = grab_file(fname, fname, NULL);
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);
+ lines = strsplit(raw, replace(raw, raw, "\\n", "\n"), "\n");
- deps = talloc_array(ctx, char *, n+1);
+ deps = talloc_array(ctx, char *, talloc_array_length(lines));
for (n = i = 0; lines[i]; i++) {
char *str;
}
deps[n] = NULL;
talloc_free(fname);
- if (num)
- *num = n;
- return deps;
+
+ /* Make sure talloc_array_length() works */
+ return talloc_realloc(NULL, deps, char *, n + 1);
}
-static bool have_dep(char **deps, unsigned int num, const char *dep)
+static bool have_dep(char **deps, const char *dep)
{
unsigned int i;
- for (i = 0; i < num; i++)
+ for (i = 0; deps[i]; 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 *(*get_info)(const void *ctx, const char *dir),
+ char **(*get_one)(const void *, const char *,
+ char *(*get_info)(const void *, const char *)))
{
char **deps;
- unsigned int i, num;
+ unsigned int i;
- deps = get_one(ctx, dir, &num);
- for (i = 0; i < num; i++) {
+ deps = get_one(ctx, dir, get_info);
+ for (i = 0; i < talloc_array_length(deps)-1; i++) {
char **newdeps;
- unsigned int j, newnum;
+ unsigned int j;
+ char *subdir;
if (!strstarts(deps[i], "ccan/"))
continue;
- newdeps = get_one(ctx, deps[i], &newnum);
+ subdir = talloc_asprintf(ctx, "%s/%s",
+ talloc_dirname(ctx, dir),
+ deps[i] + strlen("ccan/"));
+ newdeps = get_one(ctx, subdir, get_info);
/* Should be short, so brute-force out dups. */
- for (j = 0; j < newnum; j++) {
- if (have_dep(deps, num, newdeps[j]))
+ for (j = 0; j < talloc_array_length(newdeps)-1; j++) {
+ unsigned int num;
+
+ if (have_dep(deps, newdeps[j]))
continue;
+ num = talloc_array_length(deps)-1;
deps = talloc_realloc(NULL, deps, char *, num + 2);
- deps[num++] = newdeps[j];
- deps[num] = NULL;
+ deps[num] = newdeps[j];
+ deps[num+1] = NULL;
}
}
return deps;
}
-char **get_deps(const void *ctx, const char *dir, bool recurse)
+/* Can return NULL: _info may not support 'libs'. */
+static char **get_one_libs(const void *ctx, const char *dir,
+ char *(*get_info)(const void *ctx, const char *dir))
{
- if (!recurse) {
- unsigned int num;
- return get_one_deps(ctx, dir, &num);
+ char *cmd, **lines;
+
+ cmd = talloc_asprintf(ctx, "%s libs", get_info(ctx, dir));
+ lines = lines_from_cmd(cmd, "%s", cmd);
+ /* Strip final NULL. */
+ if (lines)
+ lines = talloc_realloc(NULL, lines, char *,
+ talloc_array_length(lines)-1);
+ return lines;
+}
+
+char **get_libs(const void *ctx, const char *dir, bool recurse,
+ char *(*get_info)(const void *ctx, const char *dir))
+{
+ char **deps, **libs;
+ unsigned int i, len;
+
+ libs = get_one_libs(ctx, dir, get_info);
+ len = talloc_array_length(libs);
+
+ if (recurse) {
+ deps = get_deps(ctx, dir, true, get_info);
+ for (i = 0; deps[i]; i++) {
+ char **newlibs, *subdir;
+ size_t newlen;
+
+ if (!strstarts(deps[i], "ccan/"))
+ continue;
+
+ subdir = talloc_asprintf(ctx, "%s/%s",
+ talloc_dirname(ctx, dir),
+ deps[i] + strlen("ccan/"));
+
+ newlibs = get_one_libs(ctx, subdir, get_info);
+ newlen = talloc_array_length(newlibs);
+ libs = talloc_realloc(ctx, libs, char *, len + newlen);
+ memcpy(&libs[len], newlibs,
+ sizeof(newlibs[0])*newlen);
+ len += newlen;
+ }
}
- return get_all_deps(ctx, dir, get_one_deps);
+
+ /* Append NULL entry. */
+ libs = talloc_realloc(ctx, libs, char *, len + 1);
+ libs[len] = NULL;
+ return libs;
+}
+
+/* FIXME: This is O(n^2), which is dumb. */
+static char **uniquify_deps(char **deps)
+{
+ unsigned int i, j, num;
+
+ if (!deps)
+ return NULL;
+
+ num = talloc_array_length(deps) - 1;
+ for (i = 0; i < num; i++) {
+ for (j = i + 1; j < num; j++) {
+ if (streq(deps[i], deps[j])) {
+ memmove(&deps[j], &deps[j+1],
+ (num - j - 1) * sizeof(char *));
+ num--;
+ }
+ }
+ }
+ deps[num] = NULL;
+ /* Make sure talloc_array_length() works */
+ return talloc_realloc(NULL, deps, char *, num + 1);
+}
+
+char **get_deps(const void *ctx, const char *dir, bool recurse,
+ char *(*get_info)(const void *ctx, const char *dir))
+{
+ char **ret;
+
+ if (!recurse) {
+ ret = get_one_deps(ctx, dir, get_info);
+ } else
+ ret = get_all_deps(ctx, dir, get_info, get_one_deps);
+
+ return uniquify_deps(ret);
}
-char **get_safe_ccan_deps(const void *ctx, const char *dir, bool recurse)
+char **get_safe_ccan_deps(const void *ctx, const char *dir,
+ bool recurse)
{
+ char **ret;
if (!recurse) {
- unsigned int num;
- return get_one_safe_deps(ctx, dir, &num);
+ ret = get_one_safe_deps(ctx, dir, NULL);
+ } else {
+ ret = get_all_deps(ctx, dir, NULL, get_one_safe_deps);
}
- return get_all_deps(ctx, dir, get_one_safe_deps);
+ return uniquify_deps(ret);
}
-
projects / ccan / blobdiff