/* xgettext C# backend. Copyright (C) 2003, 2005-2009 Free Software Foundation, Inc. Written by Bruno Haible , 2003. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #ifdef HAVE_CONFIG_H # include "config.h" #endif /* Specification. */ #include "x-csharp.h" #include #include #include #include #include #include "message.h" #include "xgettext.h" #include "c-ctype.h" #include "error.h" #include "error-progname.h" #include "xalloc.h" #include "xerror.h" #include "xvasprintf.h" #include "hash.h" #include "po-charset.h" #include "unistr.h" #include "gettext.h" #define _(s) gettext(s) #define SIZEOF(a) (sizeof(a) / sizeof(a[0])) /* The C# syntax is defined in ECMA-334, second edition. */ /* ====================== Keyword set customization. ====================== */ /* If true extract all strings. */ static bool extract_all = false; static hash_table keywords; static bool default_keywords = true; void x_csharp_extract_all () { extract_all = true; } /* Processes a --keyword option. Non-ASCII function names can be used if given in UTF-8 encoding. */ void x_csharp_keyword (const char *name) { if (name == NULL) default_keywords = false; else { const char *end; struct callshape shape; const char *colon; if (keywords.table == NULL) hash_init (&keywords, 100); split_keywordspec (name, &end, &shape); /* The characters between name and end should form a valid C# identifier sequence with dots. A colon means an invalid parse in split_keywordspec(). */ colon = strchr (name, ':'); if (colon == NULL || colon >= end) insert_keyword_callshape (&keywords, name, end - name, &shape); } } /* Finish initializing the keywords hash table. Called after argument processing, before each file is processed. */ static void init_keywords () { if (default_keywords) { /* When adding new keywords here, also update the documentation in xgettext.texi! */ x_csharp_keyword ("GetString"); /* Resource{Manager,Set}.GetString */ x_csharp_keyword ("GetPluralString:1,2"); /* GettextResource{Manager,Set}.GetPluralString */ x_csharp_keyword ("GetParticularString:1c,2"); /* Resource{Manager,Set}.GetParticularString */ x_csharp_keyword ("GetParticularPluralString:1c,2,3"); /* Resource{Manager,Set}.GetParticularPluralString */ default_keywords = false; } } void init_flag_table_csharp () { xgettext_record_flag ("GetString:1:pass-csharp-format"); xgettext_record_flag ("GetPluralString:1:pass-csharp-format"); xgettext_record_flag ("GetPluralString:2:pass-csharp-format"); xgettext_record_flag ("GetParticularString:2:pass-csharp-format"); xgettext_record_flag ("GetParticularPluralString:2:pass-csharp-format"); xgettext_record_flag ("GetParticularPluralString:3:pass-csharp-format"); xgettext_record_flag ("String.Format:1:csharp-format"); } /* ======================== Reading of characters. ======================== */ /* Real filename, used in error messages about the input file. */ static const char *real_file_name; /* Logical filename and line number, used to label the extracted messages. */ static char *logical_file_name; static int line_number; /* The input file stream. */ static FILE *fp; /* Phase 1: line_number handling. */ /* Maximum used, roughly a safer MB_LEN_MAX. */ #define MAX_PHASE1_PUSHBACK 16 static unsigned char phase1_pushback[MAX_PHASE1_PUSHBACK]; static int phase1_pushback_length; /* Read the next single byte from the input file. */ static int phase1_getc () { int c; if (phase1_pushback_length) { c = phase1_pushback[--phase1_pushback_length]; if (c == '\n') ++line_number; return c; } c = getc (fp); if (c == EOF) { if (ferror (fp)) error (EXIT_FAILURE, errno, _("error while reading \"%s\""), real_file_name); return EOF; } if (c == '\n') ++line_number; return c; } /* Supports MAX_PHASE1_PUSHBACK characters of pushback. */ static void phase1_ungetc (int c) { if (c != EOF) { if (c == '\n') --line_number; if (phase1_pushback_length == SIZEOF (phase1_pushback)) abort (); phase1_pushback[phase1_pushback_length++] = c; } } /* Phase 2: Conversion to Unicode. This is done early because ECMA-334 section 9.1. says that the source is "an ordered sequence of Unicode characters", and because the recognition of the line terminators (ECMA-334 section 9.3.1) is hardly possible without prior conversion to Unicode. */ /* End-of-file indicator for functions returning an UCS-4 character. */ #define UEOF -1 /* Newline Unicode character. */ #define UNL 0x000a static lexical_context_ty lexical_context; static int phase2_pushback[1]; static int phase2_pushback_length; /* Read the next Unicode UCS-4 character from the input file. */ static int phase2_getc () { if (phase2_pushback_length) return phase2_pushback[--phase2_pushback_length]; if (xgettext_current_source_encoding == po_charset_ascii) { int c = phase1_getc (); if (c == EOF) return UEOF; if (!c_isascii (c)) { multiline_error (xstrdup (""), xasprintf ("%s\n%s\n", non_ascii_error_message (lexical_context, real_file_name, line_number), _("\ Please specify the source encoding through --from-code."))); exit (EXIT_FAILURE); } return c; } else if (xgettext_current_source_encoding != po_charset_utf8) { #if HAVE_ICONV /* Use iconv on an increasing number of bytes. Read only as many bytes through phase1_getc as needed. This is needed to give reasonable interactive behaviour when fp is connected to an interactive tty. */ unsigned char buf[MAX_PHASE1_PUSHBACK]; size_t bufcount; int c = phase1_getc (); if (c == EOF) return UEOF; buf[0] = (unsigned char) c; bufcount = 1; for (;;) { unsigned char scratchbuf[6]; const char *inptr = (const char *) &buf[0]; size_t insize = bufcount; char *outptr = (char *) &scratchbuf[0]; size_t outsize = sizeof (scratchbuf); size_t res = iconv (xgettext_current_source_iconv, (ICONV_CONST char **) &inptr, &insize, &outptr, &outsize); /* We expect that a character has been produced if and only if some input bytes have been consumed. */ if ((insize < bufcount) != (outsize < sizeof (scratchbuf))) abort (); if (outsize == sizeof (scratchbuf)) { /* No character has been produced. Must be an error. */ if (res != (size_t)(-1)) abort (); if (errno == EILSEQ) { /* An invalid multibyte sequence was encountered. */ multiline_error (xstrdup (""), xasprintf (_("\ %s:%d: Invalid multibyte sequence.\n\ Please specify the correct source encoding through --from-code.\n"), real_file_name, line_number)); exit (EXIT_FAILURE); } else if (errno == EINVAL) { /* An incomplete multibyte character. */ int c; if (bufcount == MAX_PHASE1_PUSHBACK) { /* An overlong incomplete multibyte sequence was encountered. */ multiline_error (xstrdup (""), xasprintf (_("\ %s:%d: Long incomplete multibyte sequence.\n\ Please specify the correct source encoding through --from-code.\n"), real_file_name, line_number)); exit (EXIT_FAILURE); } /* Read one more byte and retry iconv. */ c = phase1_getc (); if (c == EOF) { multiline_error (xstrdup (""), xasprintf (_("\ %s:%d: Incomplete multibyte sequence at end of file.\n\ Please specify the correct source encoding through --from-code.\n"), real_file_name, line_number)); exit (EXIT_FAILURE); } if (c == '\n') { multiline_error (xstrdup (""), xasprintf (_("\ %s:%d: Incomplete multibyte sequence at end of line.\n\ Please specify the correct source encoding through --from-code.\n"), real_file_name, line_number - 1)); exit (EXIT_FAILURE); } buf[bufcount++] = (unsigned char) c; } else error (EXIT_FAILURE, errno, _("%s:%d: iconv failure"), real_file_name, line_number); } else { size_t outbytes = sizeof (scratchbuf) - outsize; size_t bytes = bufcount - insize; ucs4_t uc; /* We expect that one character has been produced. */ if (bytes == 0) abort (); if (outbytes == 0) abort (); /* Push back the unused bytes. */ while (insize > 0) phase1_ungetc (buf[--insize]); /* Convert the character from UTF-8 to UCS-4. */ if (u8_mbtouc (&uc, scratchbuf, outbytes) < outbytes) { /* scratchbuf contains an out-of-range Unicode character (> 0x10ffff). */ multiline_error (xstrdup (""), xasprintf (_("\ %s:%d: Invalid multibyte sequence.\n\ Please specify the source encoding through --from-code.\n"), real_file_name, line_number)); exit (EXIT_FAILURE); } return uc; } } #else /* If we don't have iconv(), the only supported values for xgettext_global_source_encoding and thus also for xgettext_current_source_encoding are ASCII and UTF-8. */ abort (); #endif } else { /* Read an UTF-8 encoded character. */ unsigned char buf[6]; unsigned int count; int c; ucs4_t uc; c = phase1_getc (); if (c == EOF) return UEOF; buf[0] = c; count = 1; if (buf[0] >= 0xc0) { c = phase1_getc (); if (c == EOF) return UEOF; buf[1] = c; count = 2; } if (buf[0] >= 0xe0 && ((buf[1] ^ 0x80) < 0x40)) { c = phase1_getc (); if (c == EOF) return UEOF; buf[2] = c; count = 3; } if (buf[0] >= 0xf0 && ((buf[1] ^ 0x80) < 0x40) && ((buf[2] ^ 0x80) < 0x40)) { c = phase1_getc (); if (c == EOF) return UEOF; buf[3] = c; count = 4; } if (buf[0] >= 0xf8 && ((buf[1] ^ 0x80) < 0x40) && ((buf[2] ^ 0x80) < 0x40) && ((buf[3] ^ 0x80) < 0x40)) { c = phase1_getc (); if (c == EOF) return UEOF; buf[4] = c; count = 5; } if (buf[0] >= 0xfc && ((buf[1] ^ 0x80) < 0x40) && ((buf[2] ^ 0x80) < 0x40) && ((buf[3] ^ 0x80) < 0x40) && ((buf[4] ^ 0x80) < 0x40)) { c = phase1_getc (); if (c == EOF) return UEOF; buf[5] = c; count = 6; } u8_mbtouc (&uc, buf, count); return uc; } } /* Supports only one pushback character. */ static void phase2_ungetc (int c) { if (c != UEOF) { if (phase2_pushback_length == SIZEOF (phase2_pushback)) abort (); phase2_pushback[phase2_pushback_length++] = c; } } /* Phase 3: Convert all line terminators to LF. See ECMA-334 section 9.3.1. */ /* Line number defined in terms of phase3. */ static int logical_line_number; static int phase3_pushback[9]; static int phase3_pushback_length; /* Read the next Unicode UCS-4 character from the input file, mapping all line terminators to U+000A, and dropping U+001A at the end of file. */ static int phase3_getc () { int c; if (phase3_pushback_length) { c = phase3_pushback[--phase3_pushback_length]; if (c == UNL) ++logical_line_number; return c; } c = phase2_getc (); if (c == 0x000d) { int c1 = phase2_getc (); if (c1 != UEOF && c1 != 0x000a) phase2_ungetc (c1); /* Seen line terminator CR or CR/LF. */ ++logical_line_number; return UNL; } if (c == 0x0085 || c == 0x2028 || c == 0x2029) { /* Seen Unicode word processor newline. */ ++logical_line_number; return UNL; } if (c == 0x001a) { int c1 = phase2_getc (); if (c1 == UEOF) /* Seen U+001A right before the end of file. */ return UEOF; phase2_ungetc (c1); } if (c == UNL) ++logical_line_number; return c; } /* Supports 9 characters of pushback. */ static void phase3_ungetc (int c) { if (c != UEOF) { if (c == UNL) --logical_line_number; if (phase3_pushback_length == SIZEOF (phase3_pushback)) abort (); phase3_pushback[phase3_pushback_length++] = c; } } /* ========================= Accumulating strings. ======================== */ /* A string buffer type that allows appending Unicode characters. Returns the entire string in UTF-8 encoding. */ struct string_buffer { /* The part of the string that has already been converted to UTF-8. */ char *utf8_buffer; size_t utf8_buflen; size_t utf8_allocated; }; /* Initialize a 'struct string_buffer' to empty. */ static inline void init_string_buffer (struct string_buffer *bp) { bp->utf8_buffer = NULL; bp->utf8_buflen = 0; bp->utf8_allocated = 0; } /* Auxiliary function: Ensure count more bytes are available in bp->utf8. */ static inline void string_buffer_append_unicode_grow (struct string_buffer *bp, size_t count) { if (bp->utf8_buflen + count > bp->utf8_allocated) { size_t new_allocated = 2 * bp->utf8_allocated + 10; if (new_allocated < bp->utf8_buflen + count) new_allocated = bp->utf8_buflen + count; bp->utf8_allocated = new_allocated; bp->utf8_buffer = xrealloc (bp->utf8_buffer, new_allocated); } } /* Auxiliary function: Append a Unicode character to bp->utf8. uc must be < 0x110000. */ static inline void string_buffer_append_unicode (struct string_buffer *bp, unsigned int uc) { unsigned char utf8buf[6]; int count = u8_uctomb (utf8buf, uc, 6); if (count < 0) /* The caller should have ensured that uc is not out-of-range. */ abort (); string_buffer_append_unicode_grow (bp, count); memcpy (bp->utf8_buffer + bp->utf8_buflen, utf8buf, count); bp->utf8_buflen += count; } /* Return the string buffer's contents. */ static char * string_buffer_result (struct string_buffer *bp) { /* NUL-terminate it. */ string_buffer_append_unicode_grow (bp, 1); bp->utf8_buffer[bp->utf8_buflen] = '\0'; /* Return it. */ return bp->utf8_buffer; } /* Free the memory pointed to by a 'struct string_buffer'. */ static inline void free_string_buffer (struct string_buffer *bp) { free (bp->utf8_buffer); } /* ======================== Accumulating comments. ======================== */ /* Accumulating a single comment line. */ static struct string_buffer comment_buffer; static inline void comment_start () { lexical_context = lc_comment; comment_buffer.utf8_buflen = 0; } static inline bool comment_at_start () { return (comment_buffer.utf8_buflen == 0); } static inline void comment_add (int c) { string_buffer_append_unicode (&comment_buffer, c); } static inline void comment_line_end (size_t chars_to_remove) { char *buffer = string_buffer_result (&comment_buffer); size_t buflen = strlen (buffer); buflen -= chars_to_remove; while (buflen >= 1 && (buffer[buflen - 1] == ' ' || buffer[buflen - 1] == '\t')) --buflen; buffer[buflen] = '\0'; savable_comment_add (buffer); lexical_context = lc_outside; } /* These are for tracking whether comments count as immediately before keyword. */ static int last_comment_line; static int last_non_comment_line; /* Phase 4: Replace each comment that is not inside a character constant or string literal with a space or newline character. See ECMA-334 section 9.3.2. */ static int phase4_getc () { int c0; int c; bool last_was_star; c0 = phase3_getc (); if (c0 != '/') return c0; c = phase3_getc (); switch (c) { default: phase3_ungetc (c); return c0; case '*': /* C style comment. */ comment_start (); last_was_star = false; for (;;) { c = phase3_getc (); if (c == UEOF) break; /* We skip all leading white space, but not EOLs. */ if (!(comment_at_start () && (c == ' ' || c == '\t'))) comment_add (c); switch (c) { case UNL: comment_line_end (1); comment_start (); last_was_star = false; continue; case '*': last_was_star = true; continue; case '/': if (last_was_star) { comment_line_end (2); break; } /* FALLTHROUGH */ default: last_was_star = false; continue; } break; } last_comment_line = logical_line_number; return ' '; case '/': /* C++ style comment. */ last_comment_line = logical_line_number; comment_start (); for (;;) { c = phase3_getc (); if (c == UNL || c == UEOF) break; /* We skip all leading white space, but not EOLs. */ if (!(comment_at_start () && (c == ' ' || c == '\t'))) comment_add (c); } phase3_ungetc (c); /* push back the newline, to decrement logical_line_number */ comment_line_end (0); phase3_getc (); /* read the newline again */ return UNL; } } /* Supports only one pushback character. */ static void phase4_ungetc (int c) { phase3_ungetc (c); } /* ======================= Character classification. ====================== */ /* Return true if a given character is white space. See ECMA-334 section 9.3.3. */ static bool is_whitespace (int c) { /* Unicode character class Zs, as of Unicode 4.0. */ /* grep '^[^;]*;[^;]*;Zs;' UnicodeData-4.0.0.txt */ switch (c >> 8) { case 0x00: return (c == 0x0020 || c == 0x00a0); case 0x16: return (c == 0x1680); case 0x18: return (c == 0x180e); case 0x20: return ((c >= 0x2000 && c <= 0x200b) || c == 0x202f || c == 0x205f); case 0x30: return (c == 0x3000); default: return false; } } /* C# allows identifiers containing many Unicode characters. We recognize them; to use an identifier with Unicode characters in a --keyword option, it must be specified in UTF-8. */ static inline int bitmap_lookup (const void *table, unsigned int uc) { unsigned int index1 = uc >> 16; if (index1 < ((const int *) table)[0]) { int lookup1 = ((const int *) table)[1 + index1]; if (lookup1 >= 0) { unsigned int index2 = (uc >> 9) & 0x7f; int lookup2 = ((const int *) table)[lookup1 + index2]; if (lookup2 >= 0) { unsigned int index3 = (uc >> 5) & 0xf; unsigned int lookup3 = ((const int *) table)[lookup2 + index3]; return (lookup3 >> (uc & 0x1f)) & 1; } } } return 0; } /* Unicode character classes Lu, Ll, Lt, Lm, Lo, Nl, as of Unicode 4.0, plus the underscore. */ static const struct { int header[1]; int level1[3]; int level2[3 << 7]; /*unsigned*/ int level3[34 << 4]; } table_identifier_start = { { 3 }, { 4, 132, 260 }, { 388, 404, 420, 436, 452, 468, 484, 500, 516, 532, 548, 564, 580, -1, 596, 612, 628, -1, -1, -1, -1, -1, -1, -1, 644, -1, 660, 660, 660, 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0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF3FFF, 0xFFFFFFFF, 0x000007FF, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xA0F8007F, 0x5F7FFDFF, 0xFFFFFFDB, 0xFFFFFFFF, 0xFFFFFFFF, 0x0003FFFF, 0xFFF80000, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x3FFFFFFF, 0xFFFF0000, 0xFFFFFFFF, 0xFFFCFFFF, 0xFFFFFFFF, 0x000000FF, 0x0FFF0000, 0x00000000, 0x00000000, 0x00000000, 0xFFDF0000, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x1FFFFFFF, 0x00000000, 0x07FFFFFE, 0x07FFFFFE, 0xFFFFFFC0, 0xFFFFFFFF, 0x7FFFFFFF, 0x1CFCFCFC, 0x00000000, 0xFFFFEFFF, 0xB7FFFF7F, 0x3FFF3FFF, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x07FFFFFF, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x7FFFFFFF, 0xFFFF0000, 0x000007FF, 0x00000000, 0x3FFFFFFF, 0x00000000, 0x00000000, 0x00000000, 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0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 } }; /* Unicode character classes Lu, Ll, Lt, Lm, Lo, Nl, Nd, Pc, Mn, Mc, Cf, as of Unicode 4.0. */ static const struct { int header[1]; int level1[15]; int level2[4 << 7]; /*unsigned*/ int level3[36 << 4]; } table_identifier_part = { { 15 }, { 16, 144, 272, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 400 }, { 528, 544, 560, 576, 592, 608, 624, 640, 656, 672, 688, 704, 720, -1, 736, 752, 768, -1, -1, -1, -1, -1, -1, -1, 784, -1, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 816, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 832, 800, 800, 848, -1, -1, -1, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 864, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 880, 896, 912, 928, 944, 960, 976, -1, 992, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1008, -1, 1024, 1040, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 800, 1056, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 800, 1072, -1, -1, 1088, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }, { 0x00000000, 0x03FF0000, 0x87FFFFFE, 0x07FFFFFE, 0x00000000, 0x04202400, 0xFF7FFFFF, 0xFF7FFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x007FFFFF, 0xFFFF0000, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x0003FFC3, 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0xFFDFFFFF, 0xFFFF7FFF, 0xFFFF7FFF, 0xFFFFFDFF, 0xFFFFFDFF, 0xFFFFC3F7, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x007FFFFF, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x3FFFFFFF, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000002, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x0000FFFF } }; /* Return true if a given character can occur as first character of an identifier. See ECMA-334 section 9.4.2. */ static bool is_identifier_start (int c) { return bitmap_lookup (&table_identifier_start, c); /* In ASCII only this would be: return ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || c == '_'); */ } /* Return true if a given character can occur as character of an identifier. See ECMA-334 section 9.4.2. */ static bool is_identifier_part (int c) { return bitmap_lookup (&table_identifier_part, c); /* In ASCII only this would be: return ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || c == '_'); */ } static bool is_any_character (int c) { return true; } /* ======================= Preprocessor directives. ======================= */ /* Phase 5: Remove preprocessor lines. See ECMA-334 section 9.5. As a side effect, this also removes initial whitespace on every line; this whitespace doesn't matter. */ static int phase5_pushback[10]; static int phase5_pushback_length; static int phase5_getc () { int c; if (phase5_pushback_length) return phase5_pushback[--phase5_pushback_length]; c = phase4_getc (); if (c != UNL) return c; do c = phase3_getc (); while (c != UEOF && is_whitespace (c)); if (c == '#') { /* Ignore the entire line containing the preprocessor directive (including the // comment if it contains one). */ do c = phase3_getc (); while (c != UEOF && c != UNL); return c; } else { phase3_ungetc (c); return UNL; } } #ifdef unused static void phase5_ungetc (int c) { if (c != UEOF) { if (phase5_pushback_length == SIZEOF (phase5_pushback)) abort (); phase5_pushback[phase5_pushback_length++] = c; } } #endif /* ========================== Reading of tokens. ========================== */ enum token_type_ty { token_type_eof, token_type_lparen, /* ( */ token_type_rparen, /* ) */ token_type_lbrace, /* { */ token_type_rbrace, /* } */ token_type_comma, /* , */ token_type_dot, /* . */ token_type_string_literal, /* "abc", @"abc" */ token_type_number, /* 1.23 */ token_type_symbol, /* identifier, keyword, null */ token_type_plus, /* + */ token_type_other /* character literal, misc. operator */ }; typedef enum token_type_ty token_type_ty; typedef struct token_ty token_ty; struct token_ty { token_type_ty type; char *string; /* for token_type_string_literal, token_type_symbol */ refcounted_string_list_ty *comment; /* for token_type_string_literal */ int line_number; int logical_line_number; }; /* Free the memory pointed to by a 'struct token_ty'. */ static inline void free_token (token_ty *tp) { if (tp->type == token_type_string_literal || tp->type == token_type_symbol) free (tp->string); if (tp->type == token_type_string_literal) drop_reference (tp->comment); } /* Read a Unicode escape sequence outside string/character literals. Reject Unicode escapes that don't fulfill the given predicate. See ECMA-334 section 9.4.2. */ static int do_getc_unicode_escaped (bool (*predicate) (int)) { int c; /* Use phase 3, because phase 4 elides comments. */ c = phase3_getc (); if (c == UEOF) return '\\'; if (c == 'u' || c == 'U') { unsigned char buf[8]; int expect; unsigned int n; int i; expect = (c == 'U' ? 8 : 4); n = 0; for (i = 0; i < expect; i++) { int c1 = phase3_getc (); if (c1 >= '0' && c1 <= '9') n = (n << 4) + (c1 - '0'); else if (c1 >= 'A' && c1 <= 'F') n = (n << 4) + (c1 - 'A' + 10); else if (c1 >= 'a' && c1 <= 'f') n = (n << 4) + (c1 - 'a' + 10); else { phase3_ungetc (c1); while (--i >= 0) phase3_ungetc (buf[i]); phase3_ungetc (c); return '\\'; } buf[i] = c1; } if (n >= 0x110000) { error_with_progname = false; error (0, 0, _("%s:%d: warning: invalid Unicode character"), logical_file_name, line_number); error_with_progname = true; } else if (predicate (n)) return n; while (--i >= 0) phase3_ungetc (buf[i]); } phase3_ungetc (c); return '\\'; } /* Read an escape sequence inside a string literal or character literal. See ECMA-334 sections 9.4.4.4., 9.4.4.5. */ static int do_getc_escaped () { int c; int n; int i; /* Use phase 3, because phase 4 elides comments. */ c = phase3_getc (); if (c == UEOF) return '\\'; switch (c) { case 'a': return 0x0007; case 'b': return 0x0008; case 't': return 0x0009; case 'n': return 0x000a; case 'v': return 0x000b; case 'f': return 0x000c; case 'r': return 0x000d; case '"': return '"'; case '\'': return '\''; case '\\': return '\\'; case '0': return 0x0000; case 'x': c = phase3_getc (); switch (c) { default: phase3_ungetc (c); phase3_ungetc ('x'); return '\\'; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': break; } n = 0; for (i = 0;; i++) { switch (c) { default: phase3_ungetc (c); return n; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': n = n * 16 + c - '0'; break; case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': n = n * 16 + 10 + c - 'A'; break; case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': n = n * 16 + 10 + c - 'a'; break; } if (i == 3) break; c = phase3_getc (); } return n; case 'u': case 'U': phase3_ungetc (c); return do_getc_unicode_escaped (is_any_character); default: /* Invalid escape sequence. */ phase3_ungetc (c); return '\\'; } } /* Read a regular string literal or character literal. See ECMA-334 sections 9.4.4.4., 9.4.4.5. */ static void accumulate_escaped (struct string_buffer *literal, int delimiter) { int c; for (;;) { /* Use phase 3, because phase 4 elides comments. */ c = phase3_getc (); if (c == UEOF || c == delimiter) break; if (c == UNL) { phase3_ungetc (c); error_with_progname = false; if (delimiter == '\'') error (0, 0, _("%s:%d: warning: unterminated character constant"), logical_file_name, line_number); else error (0, 0, _("%s:%d: warning: unterminated string constant"), logical_file_name, line_number); error_with_progname = true; break; } if (c == '\\') c = do_getc_escaped (); string_buffer_append_unicode (literal, c); } } /* Combine characters into tokens. Discard whitespace. */ /* Maximum used guaranteed to be < 4. */ static token_ty phase6_pushback[4]; static int phase6_pushback_length; static void phase6_get (token_ty *tp) { int c; if (phase6_pushback_length) { *tp = phase6_pushback[--phase6_pushback_length]; return; } tp->string = NULL; for (;;) { tp->line_number = line_number; tp->logical_line_number = logical_line_number; c = phase5_getc (); if (c == UEOF) { tp->type = token_type_eof; return; } switch (c) { case UNL: if (last_non_comment_line > last_comment_line) savable_comment_reset (); /* FALLTHROUGH */ case ' ': case '\t': case '\f': /* Ignore whitespace and comments. */ continue; } last_non_comment_line = tp->logical_line_number; switch (c) { case '(': tp->type = token_type_lparen; return; case ')': tp->type = token_type_rparen; return; case '{': tp->type = token_type_lbrace; return; case '}': tp->type = token_type_rbrace; return; case ',': tp->type = token_type_comma; return; case '.': c = phase4_getc (); if (!(c >= '0' && c <= '9')) { phase4_ungetc (c); tp->type = token_type_dot; return; } /* FALLTHROUGH */ case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': { /* Don't need to verify the complicated syntax of integers and floating-point numbers. We assume a valid C# input. The simplified syntax that we recognize as number is: any sequence of alphanumeric characters, additionally '+' and '-' immediately after 'e' or 'E' except in hexadecimal numbers. */ bool hexadecimal = false; for (;;) { c = phase4_getc (); if (c >= '0' && c <= '9') continue; if ((c >= 'A' && c <= 'Z') || (c >= 'a' &&c <= 'z')) { if (c == 'X' || c == 'x') hexadecimal = true; if ((c == 'E' || c == 'e') && !hexadecimal) { c = phase4_getc (); if (!(c == '+' || c == '-')) phase4_ungetc (c); } continue; } if (c == '.') continue; break; } phase4_ungetc (c); tp->type = token_type_number; return; } case '"': /* Regular string literal. */ { struct string_buffer literal; lexical_context = lc_string; init_string_buffer (&literal); accumulate_escaped (&literal, '"'); tp->string = xstrdup (string_buffer_result (&literal)); free_string_buffer (&literal); tp->comment = add_reference (savable_comment); lexical_context = lc_outside; tp->type = token_type_string_literal; return; } case '\'': /* Character literal. */ { struct string_buffer literal; init_string_buffer (&literal); accumulate_escaped (&literal, '\''); free_string_buffer (&literal); tp->type = token_type_other; return; } case '+': c = phase4_getc (); if (c == '+') /* Operator ++ */ tp->type = token_type_other; else if (c == '=') /* Operator += */ tp->type = token_type_other; else { /* Operator + */ phase4_ungetc (c); tp->type = token_type_plus; } return; case '@': c = phase4_getc (); if (c == '"') { /* Verbatim string literal. */ struct string_buffer literal; lexical_context = lc_string; init_string_buffer (&literal); for (;;) { /* Use phase 2, because phase 4 elides comments and phase 3 mixes up the newline characters. */ c = phase2_getc (); if (c == UEOF) break; if (c == '"') { c = phase2_getc (); if (c != '"') { phase2_ungetc (c); break; } } /* No special treatment of newline and backslash here. */ string_buffer_append_unicode (&literal, c); } tp->string = xstrdup (string_buffer_result (&literal)); free_string_buffer (&literal); tp->comment = add_reference (savable_comment); lexical_context = lc_outside; tp->type = token_type_string_literal; return; } /* FALLTHROUGH, so that @identifier is recognized. */ default: if (c == '\\') c = do_getc_unicode_escaped (is_identifier_start); if (is_identifier_start (c)) { static struct string_buffer buffer; buffer.utf8_buflen = 0; for (;;) { string_buffer_append_unicode (&buffer, c); c = phase4_getc (); if (c == '\\') c = do_getc_unicode_escaped (is_identifier_part); if (!is_identifier_part (c)) break; } phase4_ungetc (c); tp->string = xstrdup (string_buffer_result (&buffer)); tp->type = token_type_symbol; return; } else { /* Misc. operator. */ tp->type = token_type_other; return; } } } } /* Supports 3 tokens of pushback. */ static void phase6_unget (token_ty *tp) { if (tp->type != token_type_eof) { if (phase6_pushback_length == SIZEOF (phase6_pushback)) abort (); phase6_pushback[phase6_pushback_length++] = *tp; } } /* Compile-time optimization of string literal concatenation. Combine "string1" + ... + "stringN" to the concatenated string if - the token after this expression is not '.' (because then the last string could be part of a method call expression). */ static token_ty phase7_pushback[2]; static int phase7_pushback_length; static void phase7_get (token_ty *tp) { if (phase7_pushback_length) { *tp = phase7_pushback[--phase7_pushback_length]; return; } phase6_get (tp); if (tp->type == token_type_string_literal) { char *sum = tp->string; size_t sum_len = strlen (sum); for (;;) { token_ty token2; phase6_get (&token2); if (token2.type == token_type_plus) { token_ty token3; phase6_get (&token3); if (token3.type == token_type_string_literal) { token_ty token_after; phase6_get (&token_after); if (token_after.type != token_type_dot) { char *addend = token3.string; size_t addend_len = strlen (addend); sum = (char *) xrealloc (sum, sum_len + addend_len + 1); memcpy (sum + sum_len, addend, addend_len + 1); sum_len += addend_len; phase6_unget (&token_after); free_token (&token3); free_token (&token2); continue; } phase6_unget (&token_after); } phase6_unget (&token3); } phase6_unget (&token2); break; } tp->string = sum; } } /* Supports 2 tokens of pushback. */ static void phase7_unget (token_ty *tp) { if (tp->type != token_type_eof) { if (phase7_pushback_length == SIZEOF (phase7_pushback)) abort (); phase7_pushback[phase7_pushback_length++] = *tp; } } static void x_csharp_lex (token_ty *tp) { phase7_get (tp); } /* Supports 2 tokens of pushback. */ static void x_csharp_unlex (token_ty *tp) { phase7_unget (tp); } /* ========================= Extracting strings. ========================== */ /* Context lookup table. */ static flag_context_list_table_ty *flag_context_list_table; /* The file is broken into tokens. Scan the token stream, looking for a keyword, followed by a left paren, followed by a string. When we see this sequence, we have something to remember. We assume we are looking at a valid C or C++ program, and leave the complaints about the grammar to the compiler. Normal handling: Look for keyword ( ... msgid ... ) Plural handling: Look for keyword ( ... msgid ... msgid_plural ... ) We use recursion because the arguments before msgid or between msgid and msgid_plural can contain subexpressions of the same form. */ /* Extract messages until the next balanced closing parenthesis or brace, depending on TERMINATOR. Extracted messages are added to MLP. Return true upon eof, false upon closing parenthesis or brace. */ static bool extract_parenthesized (message_list_ty *mlp, token_type_ty terminator, flag_context_ty outer_context, flag_context_list_iterator_ty context_iter, struct arglist_parser *argparser) { /* Current argument number. */ int arg = 1; /* 0 when no keyword has been seen. 1 right after a keyword is seen. */ int state; /* Parameters of the keyword just seen. Defined only in state 1. */ const struct callshapes *next_shapes = NULL; /* Context iterator that will be used if the next token is a '('. */ flag_context_list_iterator_ty next_context_iter = passthrough_context_list_iterator; /* Current context. */ flag_context_ty inner_context = inherited_context (outer_context, flag_context_list_iterator_advance (&context_iter)); /* Start state is 0. */ state = 0; for (;;) { token_ty token; x_csharp_lex (&token); switch (token.type) { case token_type_symbol: { /* Combine symbol1 . ... . symbolN to a single strings, so that we can recognize static function calls like GettextResource.gettext. The information present for symbolI.....symbolN has precedence over the information for symbolJ.....symbolN with J > I. */ char *sum = token.string; size_t sum_len = strlen (sum); const char *dottedname; flag_context_list_ty *context_list; for (;;) { token_ty token2; x_csharp_lex (&token2); if (token2.type == token_type_dot) { token_ty token3; x_csharp_lex (&token3); if (token3.type == token_type_symbol) { char *addend = token3.string; size_t addend_len = strlen (addend); sum = (char *) xrealloc (sum, sum_len + 1 + addend_len + 1); sum[sum_len] = '.'; memcpy (sum + sum_len + 1, addend, addend_len + 1); sum_len += 1 + addend_len; free_token (&token3); free_token (&token2); continue; } x_csharp_unlex (&token3); } x_csharp_unlex (&token2); break; } for (dottedname = sum;;) { void *keyword_value; if (hash_find_entry (&keywords, dottedname, strlen (dottedname), &keyword_value) == 0) { next_shapes = (const struct callshapes *) keyword_value; state = 1; break; } dottedname = strchr (dottedname, '.'); if (dottedname == NULL) { state = 0; break; } dottedname++; } for (dottedname = sum;;) { context_list = flag_context_list_table_lookup ( flag_context_list_table, dottedname, strlen (dottedname)); if (context_list != NULL) break; dottedname = strchr (dottedname, '.'); if (dottedname == NULL) break; dottedname++; } next_context_iter = flag_context_list_iterator (context_list); free (sum); continue; } case token_type_lparen: if (extract_parenthesized (mlp, token_type_rparen, inner_context, next_context_iter, arglist_parser_alloc (mlp, state ? next_shapes : NULL))) { xgettext_current_source_encoding = po_charset_utf8; arglist_parser_done (argparser, arg); xgettext_current_source_encoding = xgettext_global_source_encoding; return true; } next_context_iter = null_context_list_iterator; state = 0; continue; case token_type_rparen: if (terminator == token_type_rparen) { xgettext_current_source_encoding = po_charset_utf8; arglist_parser_done (argparser, arg); xgettext_current_source_encoding = xgettext_global_source_encoding; return false; } if (terminator == token_type_rbrace) { error_with_progname = false; error (0, 0, _("%s:%d: warning: ')' found where '}' was expected"), logical_file_name, token.line_number); error_with_progname = true; } next_context_iter = null_context_list_iterator; state = 0; continue; case token_type_lbrace: if (extract_parenthesized (mlp, token_type_rbrace, null_context, null_context_list_iterator, arglist_parser_alloc (mlp, NULL))) { xgettext_current_source_encoding = po_charset_utf8; arglist_parser_done (argparser, arg); xgettext_current_source_encoding = xgettext_global_source_encoding; return true; } next_context_iter = null_context_list_iterator; state = 0; continue; case token_type_rbrace: if (terminator == token_type_rbrace) { xgettext_current_source_encoding = po_charset_utf8; arglist_parser_done (argparser, arg); xgettext_current_source_encoding = xgettext_global_source_encoding; return false; } if (terminator == token_type_rparen) { error_with_progname = false; error (0, 0, _("%s:%d: warning: '}' found where ')' was expected"), logical_file_name, token.line_number); error_with_progname = true; } next_context_iter = null_context_list_iterator; state = 0; continue; case token_type_comma: arg++; inner_context = inherited_context (outer_context, flag_context_list_iterator_advance ( &context_iter)); next_context_iter = passthrough_context_list_iterator; state = 0; continue; case token_type_string_literal: { lex_pos_ty pos; pos.file_name = logical_file_name; pos.line_number = token.line_number; xgettext_current_source_encoding = po_charset_utf8; if (extract_all) remember_a_message (mlp, NULL, token.string, inner_context, &pos, NULL, token.comment); else arglist_parser_remember (argparser, arg, token.string, inner_context, pos.file_name, pos.line_number, token.comment); xgettext_current_source_encoding = xgettext_global_source_encoding; } drop_reference (token.comment); next_context_iter = null_context_list_iterator; state = 0; continue; case token_type_eof: xgettext_current_source_encoding = po_charset_utf8; arglist_parser_done (argparser, arg); xgettext_current_source_encoding = xgettext_global_source_encoding; return true; case token_type_dot: case token_type_number: case token_type_plus: case token_type_other: next_context_iter = null_context_list_iterator; state = 0; continue; default: abort (); } } } void extract_csharp (FILE *f, const char *real_filename, const char *logical_filename, flag_context_list_table_ty *flag_table, msgdomain_list_ty *mdlp) { message_list_ty *mlp = mdlp->item[0]->messages; fp = f; real_file_name = real_filename; logical_file_name = xstrdup (logical_filename); line_number = 1; lexical_context = lc_outside; logical_line_number = 1; last_comment_line = -1; last_non_comment_line = -1; flag_context_list_table = flag_table; init_keywords (); /* Eat tokens until eof is seen. When extract_parenthesized returns due to an unbalanced closing parenthesis, just restart it. */ while (!extract_parenthesized (mlp, token_type_eof, null_context, null_context_list_iterator, arglist_parser_alloc (mlp, NULL))) ; fp = NULL; real_file_name = NULL; logical_file_name = NULL; line_number = 0; }