X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=tools%2Fccanlint%2Fccanlint.c;h=291a151842e0ce0d1126ae8ce6250ad68dc8dc48;hp=1c7ee389dbc75728d35091e23a7d0c5a4463a469;hb=caf366998b97b7cc29bc1f33c285feb2f5d33bff;hpb=072d358f47ba33b8d6d388fcaf219dc152f79b5d

diff --git a/tools/ccanlint/ccanlint.c b/tools/ccanlint/ccanlint.c
index 1c7ee389..291a1518 100644
--- a/tools/ccanlint/ccanlint.c
+++ b/tools/ccanlint/ccanlint.c
@@ -31,6 +31,8 @@
 #include <ccan/talloc/talloc.h>
 #include <ccan/opt/opt.h>
 #include <ccan/foreach/foreach.h>
+#include <ccan/grab_file/grab_file.h>
+#include <ccan/cast/cast.h>
 
 int verbose = 0;
 static LIST_HEAD(compulsory_tests);
@@ -41,6 +43,12 @@ static struct btree *cmdline_exclude;
 static struct btree *info_exclude;
 static unsigned int timeout;
 
+/* These are overridden at runtime if we can find config.h */
+const char *compiler = NULL;
+const char *cflags = NULL;
+
+const char *config_header;
+
 #if 0
 static void indent_print(const char *string)
 {
@@ -294,7 +302,7 @@ static void init_tests(void)
 	}
 }
 
-static int show_tmpdir(char *dir)
+static int show_tmpdir(const char *dir)
 {
 	printf("You can find ccanlint working files in '%s'\n", dir);
 	return 0;
@@ -475,6 +483,105 @@ static void skip_unrelated_tests(struct ccanlint *target)
 				i->skip = "not relevant to target";
 }
 
+static char *demangle_string(char *string)
+{
+	unsigned int i;
+	const char mapfrom[] = "abfnrtv";
+	const char mapto[] = "\a\b\f\n\r\t\v";
+
+	if (!strchr(string, '"'))
+		return NULL;
+	string = strchr(string, '"') + 1;
+	if (!strrchr(string, '"'))
+		return NULL;
+	*strrchr(string, '"') = '\0';
+
+	for (i = 0; i < strlen(string); i++) {
+		if (string[i] == '\\') {
+			char repl;
+			unsigned len = 0;
+			const char *p = strchr(mapfrom, string[i+1]);
+			if (p) {
+				repl = mapto[p - mapfrom];
+				len = 1;
+			} else if (strlen(string+i+1) >= 3) {
+				if (string[i+1] == 'x') {
+					repl = (string[i+2]-'0')*16
+						+ string[i+3]-'0';
+					len = 3;
+				} else if (cisdigit(string[i+1])) {
+					repl = (string[i+2]-'0')*8*8
+						+ (string[i+3]-'0')*8
+						+ (string[i+4]-'0');
+					len = 3;
+				}
+			}
+			if (len == 0) {
+				repl = string[i+1];
+				len = 1;
+			}
+
+			string[i] = repl;
+			memmove(string + i + 1, string + i + len + 1,
+				strlen(string + i + len + 1) + 1);
+		}
+	}
+
+	return string;
+}
+
+
+static void read_config_header(void)
+{
+	char *fname = talloc_asprintf(NULL, "%s/config.h", ccan_dir);
+	char **lines;
+	unsigned int i;
+
+	config_header = grab_file(NULL, fname, NULL);
+	if (!config_header) {
+		talloc_free(fname);
+		return;
+	}
+
+	lines = strsplit(config_header, config_header, "\n");
+	for (i = 0; i < talloc_array_length(lines) - 1; i++) {
+		char *sym;
+		const char **line = (const char **)&lines[i];
+
+		if (!get_token(line, "#"))
+			continue;
+		if (!get_token(line, "define"))
+			continue;
+		sym = get_symbol_token(lines, line);
+		if (streq(sym, "CCAN_COMPILER") && !compiler) {
+			compiler = demangle_string(lines[i]);
+			if (!compiler)
+				errx(1, "%s:%u:could not parse CCAN_COMPILER",
+				     fname, i+1);
+			if (verbose > 1)
+				printf("%s: compiler set to '%s'\n",
+				       fname, compiler);
+		} else if (streq(sym, "CCAN_CFLAGS") && !cflags) {
+			cflags = demangle_string(lines[i]);
+			if (!cflags)
+				errx(1, "%s:%u:could not parse CCAN_CFLAGS",
+				     fname, i+1);
+			if (verbose > 1)
+				printf("%s: compiler flags set to '%s'\n",
+				       fname, cflags);
+		}
+	}
+	if (!compiler)
+		compiler = CCAN_COMPILER;
+	if (!cflags)
+		compiler = CCAN_CFLAGS;
+}
+
+static char *opt_set_const_charp(const char *arg, const char **p)
+{
+	return opt_set_charp(arg, cast_const2(char **, p));
+}
+
 int main(int argc, char *argv[])
 {
 	bool summary = false;
@@ -512,6 +619,10 @@ int main(int argc, char *argv[])
 	opt_register_arg("--target <testname>", opt_set_charp,
 			 NULL, &target,
 			 "only run one test (and its prerequisites)");
+	opt_register_arg("--compiler <compiler>", opt_set_const_charp,
+			 NULL, &compiler, "set the compiler");
+	opt_register_arg("--cflags <flags>", opt_set_const_charp,
+			 NULL, &cflags, "set the compiler flags");
 	opt_register_noarg("-?|-h|--help", opt_usage_and_exit,
 			   "\nA program for checking and guiding development"
 			   " of CCAN modules.",
@@ -535,6 +646,7 @@ int main(int argc, char *argv[])
 		tools_verbose = true;
 
 	m = get_manifest(talloc_autofree_context(), dir);
+	read_config_header();
 
 	/* Create a symlink from temp dir back to src dir's test directory. */
 	if (symlink(talloc_asprintf(m, "%s/test", dir),
@@ -559,7 +671,8 @@ int main(int argc, char *argv[])
 	}
 
 	/* --target overrides known FAIL from _info */
-	add_info_options(m->info_file, !target);
+	if (m->info_file)
+		add_info_options(m->info_file, !target);
 
 	while ((i = get_next_test(&normal_tests)) != NULL)
 		run_test(i, summary, &score, &total_score, m);