Replaced readsome() with read() and gcount()

frontends/verilog/preproc.cc

@@ -196,14 +196,16 @@ static std::string next_token(bool pass_newline = false)
 static void input_file(std::istream &f, std::string filename)
 {
 	char buffer[513];
-	int rc;
 
 	insert_input("");
 	auto it = input_buffer.begin();
 
 	input_buffer.insert(it, "`file_push " + filename + "\n");
-	while ((rc = readsome(f, buffer, sizeof(buffer)-1)) > 0) {
+	while (1) {
-		buffer[rc] = 0;
+		f.read(buffer, sizeof(buffer)-1);
+		if (f.gcount() <= 0)
+			break;
+		buffer[f.gcount()] = 0;
 		input_buffer.insert(it, buffer);
 	}
 	input_buffer.insert(it, "\n`file_pop\n");

kernel/yosys.cc

@@ -172,22 +172,6 @@ bool patmatch(const char *pattern, const char *string)
 	return false;
 }
 
-int readsome(std::istream &f, char *s, int n)
-{
-	int rc = f.readsome(s, n);
-
-	// win32 sometimes returns 0 on a non-empty stream..
-	if (rc == 0) {
-		int c = f.get();
-		if (c != EOF) {
-			*s = c;
-			rc = 1;
-		}
-	}
-
-	return rc;
-}
-
 int run_command(const std::string &command, std::function<void(const std::string&)> process_line)
 {
 	if (!process_line)

kernel/yosys.h

@@ -94,7 +94,6 @@ std::string stringf(const char *fmt, ...) __attribute__ ((format (printf, 1, 2))
 std::string vstringf(const char *fmt, va_list ap);
 std::string next_token(std::string &text, const char *sep);
 bool patmatch(const char *pattern, const char *string);
-int readsome(std::istream &f, char *s, int n);
 int run_command(const std::string &command, std::function<void(const std::string&)> process_line = std::function<void(const std::string&)>());
 std::string make_temp_file(std::string template_str = "/tmp/yosys_XXXXXX");
 std::string make_temp_dir(std::string template_str = "/tmp/yosys_XXXXXX");

passes/cmds/write_file.cc

@@ -68,10 +68,13 @@ struct WriteFileFrontend : public Frontend {
 
 		FILE *of = fopen(output_filename.c_str(), append_mode ? "a" : "w");
 		char buffer[64 * 1024];
-		size_t bytes;
 
-		while (0 < (bytes = readsome(*f, buffer, sizeof(buffer))))
+		while (1) {
-			fwrite(buffer, bytes, 1, of);
+			f->read(buffer, sizeof(buffer));
+			if (f->gcount() <= 0)
+				break;
+			fwrite(buffer, f->gcount(), 1, of);
+		}
 
 		fclose(of);
 	}