From 84015959cc5d36d8973b2f07ece066902bbbdbe7 Mon Sep 17 00:00:00 2001
From: nanahi <130121847+na-na-hi@users.noreply.github.com>
Date: Mon, 19 Feb 2024 03:41:45 -0500
Subject: [PATCH] osdep/io: move I/O utility functions to misc/io_utils

The purpose of osdep/io is to provide a wrapper for POSIX I/O functions
on Windows. The last 2 functions are utility functions which don't serve
this purpose.
Move them to a separate file.
---
 demux/cache.c           |  1 +
 meson.build             |  1 +
 misc/io_utils.c         | 87 +++++++++++++++++++++++++++++++++++++++++
 misc/io_utils.h         | 25 ++++++++++++
 osdep/io.c              | 55 --------------------------
 osdep/io.h              |  3 --
 video/out/vo_gpu_next.c |  2 +-
 7 files changed, 115 insertions(+), 59 deletions(-)
 create mode 100644 misc/io_utils.c
 create mode 100644 misc/io_utils.h

diff --git a/demux/cache.c b/demux/cache.c
index 562eab087b..dc0e91b74a 100644
--- a/demux/cache.c
+++ b/demux/cache.c
@@ -26,6 +26,7 @@
 #include "common/msg.h"
 #include "common/av_common.h"
 #include "demux.h"
+#include "misc/io_utils.h"
 #include "options/path.h"
 #include "options/m_config.h"
 #include "options/m_option.h"
diff --git a/meson.build b/meson.build
index b564459e09..4ce2b84125 100644
--- a/meson.build
+++ b/meson.build
@@ -134,6 +134,7 @@ sources = files(
     'misc/bstr.c',
     'misc/charset_conv.c',
     'misc/dispatch.c',
+    'misc/io_utils.c',
     'misc/json.c',
     'misc/language.c',
     'misc/natural_sort.c',
diff --git a/misc/io_utils.c b/misc/io_utils.c
new file mode 100644
index 0000000000..c973cee0e4
--- /dev/null
+++ b/misc/io_utils.c
@@ -0,0 +1,87 @@
+/*
+ * I/O utility functions
+ *
+ * This file is part of mpv.
+ *
+ * mpv is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * mpv is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <limits.h>
+#include <unistd.h>
+
+#include "mpv_talloc.h"
+#include "config.h"
+#include "misc/random.h"
+#include "misc/io_utils.h"
+#include "osdep/io.h"
+
+int mp_mkostemps(char *template, int suffixlen, int flags)
+{
+    size_t len = strlen(template);
+    char *t = len >= 6 + suffixlen ? &template[len - (6 + suffixlen)] : NULL;
+    if (!t || strncmp(t, "XXXXXX", 6) != 0) {
+        errno = EINVAL;
+        return -1;
+    }
+
+    for (size_t fuckshit = 0; fuckshit < UINT32_MAX; fuckshit++) {
+        // Using a random value may make it require fewer iterations (even if
+        // not truly random; just a counter would be sufficient).
+        size_t fuckmess = mp_rand_next();
+        char crap[7] = "";
+        snprintf(crap, sizeof(crap), "%06zx", fuckmess);
+        memcpy(t, crap, 6);
+
+        int res = open(template, O_RDWR | O_CREAT | O_EXCL | flags, 0600);
+        if (res >= 0 || errno != EEXIST)
+            return res;
+    }
+
+    errno = EEXIST;
+    return -1;
+}
+
+bool mp_save_to_file(const char *filepath, const void *data, size_t size)
+{
+    assert(filepath && data && size);
+
+    bool result = false;
+    char *tmp = talloc_asprintf(NULL, "%sXXXXXX", filepath);
+    int fd = mkstemp(tmp);
+    if (fd < 0)
+        goto done;
+    FILE *cache = fdopen(fd, "wb");
+    if (!cache) {
+        close(fd);
+        unlink(tmp);
+        goto done;
+    }
+    size_t written = fwrite(data, size, 1, cache);
+    int ret = fclose(cache);
+    if (written > 0 && !ret) {
+        ret = rename(tmp, filepath);
+        result = !ret;
+    } else {
+        unlink(tmp);
+    }
+
+done:
+    talloc_free(tmp);
+    return result;
+}
diff --git a/misc/io_utils.h b/misc/io_utils.h
new file mode 100644
index 0000000000..012f2425f6
--- /dev/null
+++ b/misc/io_utils.h
@@ -0,0 +1,25 @@
+/*
+ * I/O utility functions
+ *
+ * This file is part of mpv.
+ *
+ * mpv is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * mpv is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stddef.h>
+
+int mp_mkostemps(char *template, int suffixlen, int flags);
+bool mp_save_to_file(const char *filepath, const void *data, size_t size);
diff --git a/osdep/io.c b/osdep/io.c
index bfcd44f096..18c2a83f94 100644
--- a/osdep/io.c
+++ b/osdep/io.c
@@ -891,58 +891,3 @@ void freelocale(locale_t locobj)
 }
 
 #endif // __MINGW32__
-
-int mp_mkostemps(char *template, int suffixlen, int flags)
-{
-    size_t len = strlen(template);
-    char *t = len >= 6 + suffixlen ? &template[len - (6 + suffixlen)] : NULL;
-    if (!t || strncmp(t, "XXXXXX", 6) != 0) {
-        errno = EINVAL;
-        return -1;
-    }
-
-    for (size_t fuckshit = 0; fuckshit < UINT32_MAX; fuckshit++) {
-        // Using a random value may make it require fewer iterations (even if
-        // not truly random; just a counter would be sufficient).
-        size_t fuckmess = mp_rand_next();
-        char crap[7] = "";
-        snprintf(crap, sizeof(crap), "%06zx", fuckmess);
-        memcpy(t, crap, 6);
-
-        int res = open(template, O_RDWR | O_CREAT | O_EXCL | flags, 0600);
-        if (res >= 0 || errno != EEXIST)
-            return res;
-    }
-
-    errno = EEXIST;
-    return -1;
-}
-
-bool mp_save_to_file(const char *filepath, const void *data, size_t size)
-{
-    assert(filepath && data && size);
-
-    bool result = false;
-    char *tmp = talloc_asprintf(NULL, "%sXXXXXX", filepath);
-    int fd = mkstemp(tmp);
-    if (fd < 0)
-        goto done;
-    FILE *cache = fdopen(fd, "wb");
-    if (!cache) {
-        close(fd);
-        unlink(tmp);
-        goto done;
-    }
-    size_t written = fwrite(data, size, 1, cache);
-    int ret = fclose(cache);
-    if (written > 0 && !ret) {
-        ret = rename(tmp, filepath);
-        result = !ret;
-    } else {
-        unlink(tmp);
-    }
-
-done:
-    talloc_free(tmp);
-    return result;
-}
diff --git a/osdep/io.h b/osdep/io.h
index 31d17154ed..21555e8799 100644
--- a/osdep/io.h
+++ b/osdep/io.h
@@ -239,7 +239,4 @@ extern char **environ;
 
 #endif /* __MINGW32__ */
 
-int mp_mkostemps(char *template, int suffixlen, int flags);
-bool mp_save_to_file(const char *filepath, const void *data, size_t size);
-
 #endif
diff --git a/video/out/vo_gpu_next.c b/video/out/vo_gpu_next.c
index 2e6d08dcb1..c68e67e685 100644
--- a/video/out/vo_gpu_next.c
+++ b/video/out/vo_gpu_next.c
@@ -32,10 +32,10 @@
 
 #include "config.h"
 #include "common/common.h"
+#include "misc/io_utils.h"
 #include "options/m_config.h"
 #include "options/options.h"
 #include "options/path.h"
-#include "osdep/io.h"
 #include "osdep/threads.h"
 #include "stream/stream.h"
 #include "video/fmt-conversion.h"