edify: Move State.script and State.errmsg to std::string.
This way we kill a few strdup() and free() calls.
Test: 1. recovery_component_test still passes;
2. Applying an update with the new updater works;
3. The error code in a script with abort("E310: xyz") is recorded into
last_install correctly.
Change-Id: Ibda4da5937346e058a0d7cc81764d6f02920010a
(cherry picked from commit 59dcb9cbea8fb70ab933fd10d35582b08cd13f37)
diff --git a/edify/edify_parser.cpp b/edify/edify_parser.cpp
index 16ad2ab..15342d3 100644
--- a/edify/edify_parser.cpp
+++ b/edify/edify_parser.cpp
@@ -24,21 +24,20 @@
* makes the tool less useful. We should either extend the tool or remove it.
*/
+#include <errno.h>
#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+
+#include <string>
+
+#include <android-base/file.h>
#include "expr.h"
-#include "parser.h"
-void ExprDump(int depth, Expr* n, char* script) {
+static void ExprDump(int depth, const Expr* n, const std::string& script) {
printf("%*s", depth*2, "");
- char temp = script[n->end];
- script[n->end] = '\0';
printf("%s %p (%d-%d) \"%s\"\n",
n->name == NULL ? "(NULL)" : n->name, n->fn, n->start, n->end,
- script+n->start);
- script[n->end] = temp;
+ script.substr(n->start, n->end - n->start).c_str());
for (int i = 0; i < n->argc; ++i) {
ExprDump(depth+1, n->argv[i], script);
}
@@ -53,34 +52,25 @@
return 1;
}
- FILE* f = fopen(argv[1], "r");
- if (f == NULL) {
- printf("%s: %s: No such file or directory\n", argv[0], argv[1]);
+ std::string buffer;
+ if (!android::base::ReadFileToString(argv[1], &buffer)) {
+ printf("%s: failed to read %s: %s\n", argv[0], argv[1], strerror(errno));
return 1;
}
- char buffer[8192];
- int size = fread(buffer, 1, 8191, f);
- fclose(f);
- buffer[size] = '\0';
Expr* root;
int error_count = 0;
- int error = parse_string(buffer, &root, &error_count);
+ int error = parse_string(buffer.data(), &root, &error_count);
printf("parse returned %d; %d errors encountered\n", error, error_count);
if (error == 0 || error_count > 0) {
ExprDump(0, root, buffer);
- State state;
- state.cookie = NULL;
- state.script = buffer;
- state.errmsg = NULL;
-
+ State state(buffer, nullptr);
char* result = Evaluate(&state, root);
if (result == NULL) {
printf("result was NULL, message is: %s\n",
- (state.errmsg == NULL ? "(NULL)" : state.errmsg));
- free(state.errmsg);
+ (state.errmsg.empty() ? "(NULL)" : state.errmsg.c_str()));
} else {
printf("result is [%s]\n", result);
}