Adding upstream version 1.0.2.upstream/1.0.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 263 insertions, 0 deletions

diff --git a/src/io/dir-util.cpp b/src/io/dir-util.cpp
new file mode 100644
index 0000000..69a01f1
--- /dev/null
+++ b/src/io/dir-util.cpp
@@ -0,0 +1,263 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * TODO: insert short description here
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+/**
+ * @file
+ * Utility functions for filenames.
+ */
+
+#include <cerrno>
+#include <string>
+#include <cstring>
+#include <glib.h>
+#include "dir-util.h"
+
+std::string sp_relative_path_from_path( std::string const &path, std::string const &base)
+{
+    std::string result;
+    if ( !base.empty() && !path.empty() ) {
+        size_t base_len = base.length();
+        while (base_len != 0
+               && (base[base_len - 1] == G_DIR_SEPARATOR))
+        {
+            --base_len;
+        }
+
+        if ( (path.substr(0, base_len) == base.substr(0, base_len))
+             && (path[base_len] == G_DIR_SEPARATOR))
+        {
+            size_t retPos = base_len + 1;
+            while ( (retPos < path.length()) && (path[retPos] == G_DIR_SEPARATOR) ) {
+                retPos++;
+            }
+            if ( (retPos + 1) < path.length() ) {
+                result = path.substr(retPos);
+            }
+        }
+
+    }
+    if ( result.empty() ) {
+        result = path;
+    }
+    return result;
+}
+
+char const *sp_extension_from_path(char const *const path)
+{
+	if (path == nullptr) {
+		return nullptr;
+	}
+
+	char const *p = path;
+	while (*p != '\0') p++;
+
+	while ((p >= path) && (*p != G_DIR_SEPARATOR) && (*p != '.')) p--;
+	if (* p != '.') return nullptr;
+	p++;
+
+	return p;
+}
+
+
+/* current == "./", parent == "../" */
+static char const dots[] = {'.', '.', G_DIR_SEPARATOR, '\0'};
+static char const *const parent = dots;
+static char const *const current = dots + 1;
+
+char *inkscape_rel2abs(const char *path, const char *base, char *result, const size_t size)
+{
+  const char *pp, *bp;
+  /* endp points the last position which is safe in the result buffer. */
+  const char *endp = result + size - 1;
+  char *rp;
+  int length;
+  if (*path == G_DIR_SEPARATOR)
+    {
+      if (strlen (path) >= size)
+	goto erange;
+	strcpy (result, path);
+	goto finish;
+    }
+  else if (*base != G_DIR_SEPARATOR || !size)
+    {
+      errno = EINVAL;
+      return (nullptr);
+    }
+  else if (size == 1)
+    goto erange;
+  if (!strcmp (path, ".") || !strcmp (path, current))
+    {
+      if (strlen (base) >= size)
+	goto erange;
+      strcpy (result, base);
+      /* rp points the last char. */
+      rp = result + strlen (base) - 1;
+      if (*rp == G_DIR_SEPARATOR)
+	*rp = 0;
+      else
+	rp++;
+      /* rp point NULL char */
+      if (*++path == G_DIR_SEPARATOR)
+	{
+	  /* Append G_DIR_SEPARATOR to the tail of path name. */
+	  *rp++ = G_DIR_SEPARATOR;
+	  if (rp > endp)
+	    goto erange;
+	  *rp = 0;
+	}
+      goto finish;
+    }
+  bp = base + strlen (base);
+  if (*(bp - 1) == G_DIR_SEPARATOR)
+    --bp;
+  /* up to root. */
+  for (pp = path; *pp && *pp == '.';)
+    {
+      if (!strncmp (pp, parent, 3))
+	{
+	  pp += 3;
+	  while (bp > base && *--bp != G_DIR_SEPARATOR)
+	    ;
+	}
+      else if (!strncmp (pp, current, 2))
+	{
+	  pp += 2;
+	}
+      else if (!strncmp (pp, "..\0", 3))
+	{
+	  pp += 2;
+	  while (bp > base && *--bp != G_DIR_SEPARATOR)
+	    ;
+	}
+      else
+	break;
+    }
+  /* down to leaf. */
+  length = bp - base;
+  if (length >= static_cast<int>(size))
+    goto erange;
+  strncpy (result, base, length);
+  rp = result + length;
+  if (*pp || *(pp - 1) == G_DIR_SEPARATOR || length == 0)
+    *rp++ = G_DIR_SEPARATOR;
+  if (rp + strlen (pp) > endp)
+    goto erange;
+  strcpy (rp, pp);
+finish:
+  return result;
+erange:
+  errno = ERANGE;
+  return (nullptr);
+}
+
+char *inkscape_abs2rel(const char *path, const char *base, char *result, const size_t size)
+{
+    const char *pp, *bp, *branch;
+    // endp points the last position which is safe in the result buffer.
+    const char *endp = result + size - 1;
+    char *rp;
+
+    if (*path != G_DIR_SEPARATOR)
+    {
+        if (strlen (path) >= size)
+            goto erange;
+        strcpy (result, path);
+        goto finish;
+    }
+    else if (*base != G_DIR_SEPARATOR || !size)
+    {
+        errno = EINVAL;
+        return (nullptr);
+    }
+    else if (size == 1)
+        goto erange;
+    /* seek to branched point. */
+    branch = path;
+    for (pp = path, bp = base; *pp && *bp && *pp == *bp; pp++, bp++)
+        if (*pp == G_DIR_SEPARATOR)
+            branch = pp;
+    if (((*pp == 0) || ((*pp == G_DIR_SEPARATOR) && (*(pp + 1) == 0))) &&
+        ((*bp == 0) || ((*bp == G_DIR_SEPARATOR) && (*(bp + 1) == 0))))
+    {
+        rp = result;
+        *rp++ = '.';
+        if (*pp == G_DIR_SEPARATOR || *(pp - 1) == G_DIR_SEPARATOR)
+            *rp++ = G_DIR_SEPARATOR;
+        if (rp > endp)
+            goto erange;
+        *rp = 0;
+        goto finish;
+    }
+    if (((*pp == 0) && (*bp == G_DIR_SEPARATOR)) || ((*pp == G_DIR_SEPARATOR) && (*bp == 0)))
+        branch = pp;
+    /* up to root. */
+    rp = result;
+    for (bp = base + (branch - path); *bp; bp++)
+        if (*bp == G_DIR_SEPARATOR && *(bp + 1) != 0)
+        {
+            if (rp + 3 > endp)
+                goto erange;
+            *rp++ = '.';
+            *rp++ = '.';
+            *rp++ = G_DIR_SEPARATOR;
+        }
+    if (rp > endp)
+        goto erange;
+    *rp = 0;
+    /* down to leaf. */
+    if (*branch)
+    {
+        if (rp + strlen (branch + 1) > endp)
+            goto erange;
+        strcpy (rp, branch + 1);
+    }
+    else
+        *--rp = 0;
+finish:
+    return result;
+erange:
+    errno = ERANGE;
+    return (nullptr);
+}
+
+char *prepend_current_dir_if_relative(gchar const *uri)
+{
+	if (!uri) {
+		return nullptr;
+	}
+
+	gchar *full_path = (gchar *) g_malloc (1001);
+	gchar *cwd = g_get_current_dir();
+
+	gsize bytesRead = 0;
+	gsize bytesWritten = 0;
+	GError* error = nullptr;
+	gchar* cwd_utf8 = g_filename_to_utf8 ( cwd,
+                                                  -1,
+                                                  &bytesRead,
+                                                  &bytesWritten,
+                                                  &error);
+
+	inkscape_rel2abs (uri, cwd_utf8, full_path, 1000);
+	gchar *ret = g_strdup (full_path);
+	g_free (full_path);
+	g_free (cwd);
+	return ret;
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vi: set autoindent shiftwidth=4 tabstop=8 filetype=cpp expandtab softtabstop=4 fileencoding=utf-8 textwidth=99 :