X-Git-Url: https://git.sesse.net/?p=cubemap;a=blobdiff_plain;f=util.cpp;h=41c13c6f2a3ed743a5345b3d0d41c37aefb6e5bc;hp=c8e26d26aa65e5f36a6fa0b64692e767e176c006;hb=3ce04a3c410c5836394417b19e70f2a95bc8a5e7;hpb=7ddd07eb95bb3216fad47aa6d3eb76a8b2648579

diff --git a/util.cpp b/util.cpp
index c8e26d2..41c13c6 100644
--- a/util.cpp
+++ b/util.cpp
@@ -1,8 +1,10 @@
+#include <errno.h>
+#include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
-#include <errno.h>
 
+#include "log.h"
 #include "util.h"
 
 using namespace std;
@@ -40,27 +42,41 @@ int make_tempfile(const std::string &contents)
 
 bool read_tempfile(int fd, std::string *contents)
 {
+	bool ok = true;
+	ssize_t ret, has_read;
+
+	off_t len = lseek(fd, 0, SEEK_END);
+	if (len == -1) {
+		perror("lseek");
+		ok = false;
+		goto done;
+	}
+
+	contents->resize(len);
+
 	if (lseek(fd, 0, SEEK_SET) == -1) {
 		perror("lseek");
-		return false;
+		ok = false;
+		goto done;
 	}
 
-	char buf[4096];
-	for ( ;; ) {
-		ssize_t ret = read(fd, buf, sizeof(buf));
+	has_read = 0;
+	while (has_read < len) {
+		ret = read(fd, &((*contents)[has_read]), len - has_read);
 		if (ret == -1) {
 			perror("read");
-			return false;
+			ok = false;
+			goto done;
 		}
 		if (ret == 0) {
-			// EOF.
-			break;
+			log(ERROR, "Unexpected EOF!");
+			ok = false;
+			goto done;
 		}
-
-		contents->append(string(buf, buf + ret));
+		has_read += ret;
 	}
 
-	int ret;
+done:
 	do {
 		ret = close(fd);  // Implicitly deletes the files.
 	} while (ret == -1 && errno == EINTR);
@@ -70,5 +86,5 @@ bool read_tempfile(int fd, std::string *contents)
 		// Can still continue.
 	}
 
-	return true;
+	return ok;
 }