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mm_io_c: provide function for checking if BOM has been written
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9f1e60fe67
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@ -554,7 +554,7 @@ mm_io_c::write_bom(const std::string &charset) {
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const unsigned char *bom;
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unsigned int bom_len;
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if (charset.empty())
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if (m_bom_written || charset.empty())
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return false;
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if ((charset =="UTF-8") || (charset =="UTF8")) {
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@ -577,7 +577,15 @@ mm_io_c::write_bom(const std::string &charset) {
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setFilePointer(0, seek_beginning);
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return (write(bom, bom_len) == bom_len);
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m_bom_written = write(bom, bom_len) == bom_len;
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return m_bom_written;
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}
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bool
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mm_io_c::bom_written()
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const {
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return m_bom_written;
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}
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int64_t
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@ -30,7 +30,7 @@ typedef std::shared_ptr<charset_converter_c> charset_converter_cptr;
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class mm_io_c: public IOCallback {
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protected:
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bool m_dos_style_newlines;
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bool m_dos_style_newlines, m_bom_written;
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std::stack<int64_t> m_positions;
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int64_t m_current_position, m_cached_size;
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charset_converter_cptr m_string_output_converter;
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@ -38,6 +38,7 @@ protected:
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public:
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mm_io_c()
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: m_dos_style_newlines(false)
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, m_bom_written{}
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, m_current_position(0)
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, m_cached_size(-1)
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{
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@ -91,6 +92,7 @@ public:
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return puts(format.str());
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}
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virtual bool write_bom(const std::string &charset);
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virtual bool bom_written() const;
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virtual int getch();
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virtual void save_pos(int64_t new_pos = -1);
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