core: move contents to mpvcore (1/2)

core is used in many unix systems for core dumps. For that reason some tools
work under the assumption that the file is indeed a core dump (for example
autoconf does this).

This commit just renames the files. The following one will change all the
includes to fix compilation. This is done this way because git has a easier
time tracing file changes if there is a pure rename commit.

1 files changed, 125 insertions, 0 deletions

diff --git a/mpvcore/mp_common.c b/mpvcore/mp_common.c
new file mode 100644
index 0000000000..03e3e988fd
--- /dev/null
+++ b/mpvcore/mp_common.c
@@ -0,0 +1,125 @@
+/*
+ * This file is part of MPlayer.
+ *
+ * MPlayer is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * MPlayer 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <libavutil/common.h>
+
+#include "talloc.h"
+#include "core/bstr.h"
+#include "core/mp_common.h"
+
+char *mp_format_time(double time, bool fractions)
+{
+    if (time == MP_NOPTS_VALUE)
+        return talloc_strdup(NULL, "unknown");
+    char sign[2] = {0};
+    if (time < 0) {
+        time = -time;
+        sign[0] = '-';
+    }
+    long long int itime = time;
+    long long int h, m, s;
+    s = itime;
+    h = s / 3600;
+    s -= h * 3600;
+    m = s / 60;
+    s -= m * 60;
+    char *res = talloc_asprintf(NULL, "%s%02lld:%02lld:%02lld", sign, h, m, s);
+    if (fractions)
+        res = talloc_asprintf_append(res, ".%03d",
+                                     (int)((time - itime) * 1000));
+    return res;
+}
+
+// Set rc to the union of rc and rc2
+void mp_rect_union(struct mp_rect *rc, const struct mp_rect *rc2)
+{
+    rc->x0 = FFMIN(rc->x0, rc2->x0);
+    rc->y0 = FFMIN(rc->y0, rc2->y0);
+    rc->x1 = FFMAX(rc->x1, rc2->x1);
+    rc->y1 = FFMAX(rc->y1, rc2->y1);
+}
+
+// Set rc to the intersection of rc and src.
+// Return false if the result is empty.
+bool mp_rect_intersection(struct mp_rect *rc, const struct mp_rect *rc2)
+{
+    rc->x0 = FFMAX(rc->x0, rc2->x0);
+    rc->y0 = FFMAX(rc->y0, rc2->y0);
+    rc->x1 = FFMIN(rc->x1, rc2->x1);
+    rc->y1 = FFMIN(rc->y1, rc2->y1);
+
+    return rc->x1 > rc->x0 && rc->y1 > rc->y0;
+}
+
+// Encode the unicode codepoint as UTF-8, and append to the end of the
+// talloc'ed buffer.
+char *mp_append_utf8_buffer(char *buffer, uint32_t codepoint)
+{
+    char data[8];
+    uint8_t tmp;
+    char *output = data;
+    PUT_UTF8(codepoint, tmp, *output++ = tmp;);
+    return talloc_strndup_append_buffer(buffer, data, output - data);
+}
+
+// Parse a C-style escape beginning at code, and append the result to *str
+// using talloc. The input string (*code) must point to the first character
+// after the initial '\', and after parsing *code is set to the first character
+// after the current escape.
+// On error, false is returned, and all input remains unchanged.
+bool mp_parse_escape(bstr *code, char **str)
+{
+    if (code->len < 1)
+        return false;
+    char replace = 0;
+    switch (code->start[0]) {
+    case '"':  replace = '"';  break;
+    case '\\': replace = '\\'; break;
+    case 'b':  replace = '\b'; break;
+    case 'f':  replace = '\f'; break;
+    case 'n':  replace = '\n'; break;
+    case 'r':  replace = '\r'; break;
+    case 't':  replace = '\t'; break;
+    case 'e':  replace = '\x1b'; break;
+    case '\'': replace = '\''; break;
+    }
+    if (replace) {
+        *str = talloc_strndup_append_buffer(*str, &replace, 1);
+        *code = bstr_cut(*code, 1);
+        return true;
+    }
+    if (code->start[0] == 'x' && code->len >= 3) {
+        bstr num = bstr_splice(*code, 1, 3);
+        char c = bstrtoll(num, &num, 16);
+        if (!num.len)
+            return false;
+        *str = talloc_strndup_append_buffer(*str, &c, 1);
+        *code = bstr_cut(*code, 3);
+        return true;
+    }
+    if (code->start[0] == 'u' && code->len >= 5) {
+        bstr num = bstr_splice(*code, 1, 5);
+        int c = bstrtoll(num, &num, 16);
+        if (num.len)
+            return false;
+        *str = mp_append_utf8_buffer(*str, c);
+        *code = bstr_cut(*code, 5);
+        return true;
+    }
+    return false;
+}