/*
- Copyright (C) 2012-2020 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
This file is part of libdcp.
files in the program, then also delete it here.
*/
+
/** @file src/util.cc
- * @brief Utility methods.
+ * @brief Utility methods and classes
*/
+
#include "util.h"
#include "language_tag.h"
#include "exceptions.h"
#include <iostream>
#include <iomanip>
+
using std::string;
using std::wstring;
using std::cout;
/* Some ASDCP objects store this as a *&, for reasons which are not
* at all clear, so we have to keep this around forever.
*/
-ASDCP::Dictionary const* dcp::asdcp_smpte_dict = 0;
+ASDCP::Dictionary const* dcp::asdcp_smpte_dict = nullptr;
-/** Create a UUID.
- * @return UUID.
- */
string
dcp::make_uuid ()
{
return string (buffer);
}
+
string
dcp::make_digest (ArrayData data)
{
return Kumu::base64encode (byte_buffer, SHA_DIGEST_LENGTH, digest, 64);
}
-/** Create a digest for a file.
- * @param filename File name.
- * @param progress Optional progress reporting function. The function will be called
- * with a progress value between 0 and 1.
- * @return Digest.
- */
+
string
dcp::make_digest (boost::filesystem::path filename, function<void (float)> progress)
{
Kumu::FileReader reader;
- Kumu::Result_t r = reader.OpenRead (filename.string().c_str ());
- if (ASDCP_FAILURE (r)) {
- boost::throw_exception (FileError ("could not open file to compute digest", filename, r));
+ auto r = reader.OpenRead (filename.string().c_str ());
+ if (ASDCP_FAILURE(r)) {
+ boost::throw_exception (FileError("could not open file to compute digest", filename, r));
}
SHA_CTX sha;
Kumu::fsize_t done = 0;
Kumu::fsize_t const size = reader.Size ();
- while (1) {
+ while (true) {
ui32_t read = 0;
- Kumu::Result_t r = reader.Read (read_buffer.Data(), read_buffer.Capacity(), &read);
+ auto r = reader.Read (read_buffer.Data(), read_buffer.Capacity(), &read);
if (r == Kumu::RESULT_ENDOFFILE) {
break;
} else if (ASDCP_FAILURE (r)) {
- boost::throw_exception (FileError ("could not read file to compute digest", filename, r));
+ boost::throw_exception (FileError("could not read file to compute digest", filename, r));
}
SHA1_Update (&sha, read_buffer.Data(), read);
return Kumu::base64encode (byte_buffer, SHA_DIGEST_LENGTH, digest, 64);
}
-/** @param s A string.
- * @return true if the string contains only space, newline or tab characters, or is empty.
- */
+
bool
dcp::empty_or_white_space (string s)
{
return true;
}
-/** Set up various bits that the library needs. Should be called once
- * by client applications.
- *
- * @param tags_directory Path to a copy of the tags directory from the source code;
- * if none is specified libdcp will look for a tags directory inside the environment
- * variable LIBDCP_SHARE_PREFIX or the LIBDCP_SHARE_PREFIX #defined during the build.
- */
+
void
dcp::init (optional<boost::filesystem::path> tags_directory)
{
load_language_tag_lists (*tags_directory);
}
-/** Decode a base64 string. The base64 decode routine in KM_util.cpp
- * gives different values to both this and the command-line base64
- * for some inputs. Not sure why.
- *
- * @param in base64-encoded string.
- * @param out Output buffer.
- * @param out_length Length of output buffer.
- * @return Number of characters written to the output buffer.
- */
+
int
dcp::base64_decode (string const & in, unsigned char* out, int out_length)
{
- BIO* b64 = BIO_new (BIO_f_base64 ());
+ auto b64 = BIO_new (BIO_f_base64());
/* This means the input should have no newlines */
BIO_set_flags (b64, BIO_FLAGS_BASE64_NO_NL);
}
}
- BIO* bmem = BIO_new_mem_buf (in_buffer, p - in_buffer);
+ auto bmem = BIO_new_mem_buf (in_buffer, p - in_buffer);
bmem = BIO_push (b64, bmem);
int const N = BIO_read (bmem, out, out_length);
BIO_free_all (bmem);
return N;
}
-/** @param p Path to open.
- * @param t mode flags, as for fopen(3).
- * @return FILE pointer or 0 on error.
- *
- * Apparently there is no way to create an ofstream using a UTF-8
- * filename under Windows. We are hence reduced to using fopen
- * with this wrapper.
- */
+
FILE *
dcp::fopen_boost (boost::filesystem::path p, string t)
{
#endif
}
+
optional<boost::filesystem::path>
dcp::relative_to_root (boost::filesystem::path root, boost::filesystem::path file)
{
- boost::filesystem::path::const_iterator i = root.begin ();
- boost::filesystem::path::const_iterator j = file.begin ();
+ auto i = root.begin ();
+ auto j = file.begin ();
while (i != root.end() && j != file.end() && *i == *j) {
++i;
++j;
}
- if (i != root.end ()) {
- return optional<boost::filesystem::path> ();
+ if (i != root.end()) {
+ return {};
}
boost::filesystem::path rel;
- while (j != file.end ()) {
+ while (j != file.end()) {
rel /= *j++;
}
return rel;
}
+
bool
dcp::ids_equal (string a, string b)
{
return a == b;
}
+
string
dcp::file_to_string (boost::filesystem::path p, uintmax_t max_length)
{
- uintmax_t len = boost::filesystem::file_size (p);
+ auto len = boost::filesystem::file_size (p);
if (len > max_length) {
- throw MiscError (String::compose ("Unexpectedly long file (%1)", p.string()));
+ throw MiscError (String::compose("Unexpectedly long file (%1)", p.string()));
}
- FILE* f = fopen_boost (p, "r");
+ auto f = fopen_boost (p, "r");
if (!f) {
throw FileError ("could not open file", p, errno);
}
return s;
}
-/** @param key RSA private key in PEM format (optionally with -----BEGIN... / -----END...)
- * @return SHA1 fingerprint of key
- */
+
string
dcp::private_key_fingerprint (string key)
{
return Kumu::base64encode (digest, 20, digest_base64, 64);
}
+
xmlpp::Node *
dcp::find_child (xmlpp::Node const * node, string name)
{
- xmlpp::Node::NodeList c = node->get_children ();
- xmlpp::Node::NodeList::iterator i = c.begin();
+ auto c = node->get_children ();
+ auto i = c.begin();
while (i != c.end() && (*i)->get_name() != name) {
++i;
}
return *i;
}
+
string
dcp::remove_urn_uuid (string raw)
{
return raw.substr (9);
}
+
string
dcp::openjpeg_version ()
{
return opj_version ();
}
+
string
dcp::spaces (int n)
{
return s;
}
+
void
dcp::indent (xmlpp::Element* element, int initial)
{
- xmlpp::Node* last = 0;
+ xmlpp::Node* last = nullptr;
for (auto n: element->get_children()) {
auto e = dynamic_cast<xmlpp::Element*>(n);
if (e) {
}
}
-/** @return true if the day represented by \ref a is less than or
- * equal to the one represented by \ref b, ignoring the time parts.
- */
+
bool
dcp::day_less_than_or_equal (LocalTime a, LocalTime b)
{
return a.day() <= b.day();
}
-/** @return true if the day represented by \ref a is greater than or
- * equal to the one represented by \ref b, ignoring the time parts.
- */
+
bool
dcp::day_greater_than_or_equal (LocalTime a, LocalTime b)
{
return a.day() >= b.day();
}
-/** Try quite hard to find a string which starts with \ref base and is
- * not in \ref existing.
- */
+
string
dcp::unique_string (vector<string> existing, string base)
{
projects / libdcp.git / blobdiff