diff options
Diffstat (limited to 'gettext-tools/src/filter-quote.c')
| -rw-r--r-- | gettext-tools/src/filter-quote.c | 226 |
1 files changed, 77 insertions, 149 deletions
diff --git a/gettext-tools/src/filter-quote.c b/gettext-tools/src/filter-quote.c index 2e9b7dc..25ac391 100644 --- a/gettext-tools/src/filter-quote.c +++ b/gettext-tools/src/filter-quote.c @@ -1,5 +1,5 @@ /* Convert ASCII quotations to Unicode quotations. - Copyright (C) 2014 Free Software Foundation, Inc. + Copyright (C) 2014-2015 Free Software Foundation, Inc. Written by Daiki Ueno <ueno@gnu.org>, 2014. This program is free software: you can redistribute it and/or modify @@ -22,6 +22,7 @@ /* Specification. */ #include "filters.h" +#include "quote.h" #include <stdbool.h> #include <stdlib.h> #include <string.h> @@ -30,28 +31,83 @@ #define BOLD_START "\x1b[1m" #define BOLD_END "\x1b[0m" +struct result +{ + char *output; + char *offset; + bool bold; +}; + +static void +convert_quote_callback (char quote, const char *quoted, size_t quoted_length, + void *data) +{ + struct result *result = data; + + switch (quote) + { + case '\0': + memcpy (result->offset, quoted, quoted_length); + result->offset += quoted_length; + break; + + case '"': + /* U+201C: LEFT DOUBLE QUOTATION MARK */ + memcpy (result->offset, "\xe2\x80\x9c", 3); + result->offset += 3; + if (result->bold) + { + memcpy (result->offset, BOLD_START, 4); + result->offset += 4; + } + memcpy (result->offset, quoted, quoted_length); + result->offset += quoted_length; + if (result->bold) + { + memcpy (result->offset, BOLD_END, 4); + result->offset += 4; + } + /* U+201D: RIGHT DOUBLE QUOTATION MARK */ + memcpy (result->offset, "\xe2\x80\x9d", 3); + result->offset += 3; + break; + + case '\'': + /* U+2018: LEFT SINGLE QUOTATION MARK */ + memcpy (result->offset, "\xe2\x80\x98", 3); + result->offset += 3; + if (result->bold) + { + memcpy (result->offset, BOLD_START, 4); + result->offset += 4; + } + memcpy (result->offset, quoted, quoted_length); + result->offset += quoted_length; + if (result->bold) + { + memcpy (result->offset, BOLD_END, 4); + result->offset += 4; + } + /* U+2019: RIGHT SINGLE QUOTATION MARK */ + memcpy (result->offset, "\xe2\x80\x99", 3); + result->offset += 3; + break; + } +} + /* This is a direct translation of po/quot.sed and po/boldquot.sed. */ static void convert_ascii_quote_to_unicode (const char *input, size_t input_len, char **output_p, size_t *output_len_p, bool bold) { - const char *start, *end, *p; - char *output, *r; - bool state; + const char *p; size_t quote_count; - - start = input; - end = &input[input_len - 1]; - - /* True if we have seen a character which could be an opening - quotation mark. Note that we can't determine if it is really an - opening quotation mark until we see a closing quotation mark. */ - state = false; + struct result result; /* Count the number of quotation characters. */ quote_count = 0; - for (p = start; p <= end; p++) + for (p = input; p < input + input_len; p++) { size_t len; @@ -65,144 +121,16 @@ convert_ascii_quote_to_unicode (const char *input, size_t input_len, } /* Large enough. */ - r = output = XNMALLOC (input_len - quote_count - + (bold ? 7 : 3) * quote_count + 1, - char); - -#undef COPY_SEEN -#define COPY_SEEN \ - do \ - { \ - memcpy (r, start, p - start); \ - r += p - start; \ - start = p; \ - } \ - while (0) - - for (p = start; p <= end; p++) - { - switch (*p) - { - case '"': - if (state) - { - if (*start == '"') - { - if (p > start + 1) - { - /* U+201C: LEFT DOUBLE QUOTATION MARK */ - memcpy (r, "\xe2\x80\x9c", 3); - r += 3; - if (bold) - { - memcpy (r, BOLD_START, 4); - r += 4; - } - memcpy (r, start + 1, p - start - 1); - r += p - start - 1; - if (bold) - { - memcpy (r, BOLD_END, 4); - r += 4; - } - /* U+201D: RIGHT DOUBLE QUOTATION MARK */ - memcpy (r, "\xe2\x80\x9d", 3); - r += 3; - } - else - { - /* Consider "" as "". */ - memcpy (r, "\"\"", 2); - r += 2; - } - start = p + 1; - state = false; - } - } - else - { - COPY_SEEN; - state = true; - } - break; - - case '`': - if (state) - { - if (*start == '`') - COPY_SEEN; - } - else - { - COPY_SEEN; - state = true; - } - break; - - case '\'': - if (state) - { - if (/* `...' */ - *start == '`' - /* '...', where: - - The left quote is preceded by a space, and the - right quote is followed by a space. - - The left quote is preceded by a space, and the - right quote is at the end of line. - - The left quote is at the beginning of the line, and - the right quote is followed by a space. - */ - || (*start == '\'' - && (((start > input && *(start - 1) == ' ') - && (p == end || *(p + 1) == '\n' || *(p + 1) == ' ')) - || ((start == input || *(start - 1) == '\n') - && p < end && *(p + 1) == ' ')))) - { - /* U+2018: LEFT SINGLE QUOTATION MARK */ - memcpy (r, "\xe2\x80\x98", 3); - r += 3; - if (bold) - { - memcpy (r, BOLD_START, 4); - r += 4; - } - memcpy (r, start + 1, p - start - 1); - r += p - start - 1; - if (bold) - { - memcpy (r, BOLD_END, 4); - r += 4; - } - /* U+2019: RIGHT SINGLE QUOTATION MARK */ - memcpy (r, "\xe2\x80\x99", 3); - r += 3; - start = p + 1; - } - else - COPY_SEEN; - state = false; - } - else if (p == input || *(p - 1) == '\n' || *(p - 1) == ' ') - { - COPY_SEEN; - state = true; - } - break; - } - } + result.output = XNMALLOC (input_len - quote_count + + (bold ? 7 : 3) * quote_count + 1, + char); + result.offset = result.output; + result.bold = bold; -#undef COPY_SEEN - - /* Copy the rest to R. */ - if (p > start) - { - memcpy (r, start, p - start); - r += p - start; - } - *r = '\0'; + scan_quoted (input, input_len, convert_quote_callback, &result); - *output_p = output; - *output_len_p = r - output; + *output_p = result.output; + *output_len_p = result.offset - result.output; } void |