diff options
Diffstat (limited to 'src/mbgl/util/io.cpp')
-rw-r--r-- | src/mbgl/util/io.cpp | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/src/mbgl/util/io.cpp b/src/mbgl/util/io.cpp index 058cd0d202..c84634ac88 100644 --- a/src/mbgl/util/io.cpp +++ b/src/mbgl/util/io.cpp @@ -2,6 +2,7 @@ #include <cstdio> #include <cerrno> +#include <cstring> #include <iostream> #include <sstream> #include <fstream> @@ -9,6 +10,10 @@ namespace mbgl { namespace util { +IOException::IOException(int err, const std::string& msg) + : std::runtime_error(msg + ": " + std::strerror(errno)), code(err) { +} + void write_file(const std::string &filename, const std::string &data) { FILE *fd = fopen(filename.c_str(), "wb"); if (fd) { @@ -42,9 +47,21 @@ optional<std::string> readFile(const std::string &filename) { void deleteFile(const std::string& filename) { const int ret = std::remove(filename.c_str()); - if (ret != 0) { - throw IOException(errno, "failed to unlink file"); + if (ret != 0 && errno != ENOENT) { + throw IOException(errno, "Could not delete file " + filename); + } +} + +void copyFile(const std::string& destination, const std::string& source) { + std::ifstream src(source, std::ios::binary); + if (!src.good()) { + throw IOException(errno, "Cannot read file " + destination); + } + std::ofstream dst(destination, std::ios::binary); + if (!dst.good()) { + throw IOException(errno, "Cannot write file " + destination); } + dst << src.rdbuf(); } } // namespace util |