diff options
Diffstat (limited to 'src/nvim/charset.c')
| -rw-r--r-- | src/nvim/charset.c | 220 |
1 files changed, 124 insertions, 96 deletions
diff --git a/src/nvim/charset.c b/src/nvim/charset.c index e0c9443511..4e329b5cd8 100644 --- a/src/nvim/charset.c +++ b/src/nvim/charset.c @@ -799,32 +799,35 @@ unsigned int win_linetabsize(win_T *wp, char_u *line, colnr_T len) return (unsigned int)col; } -/// Return TRUE if 'c' is a normal identifier character: -/// +/// Check that "c" is a normal identifier character: /// Letters and characters from the 'isident' option. /// -/// @param c -/// -/// @return TRUE if 'c' is a normal identifier character. -int vim_isIDc(int c) +/// @param c character to check +bool vim_isIDc(int c) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT { return c > 0 && c < 0x100 && (chartab[c] & CT_ID_CHAR); } -/// return TRUE if 'c' is a keyword character: Letters and characters from -/// 'iskeyword' option for current buffer. -/// +/// Check that "c" is a keyword character: +/// Letters and characters from 'iskeyword' option for current buffer. /// For multi-byte characters mb_get_class() is used (builtin rules). /// -/// @param c -/// -/// @return TRUE if 'c' is a keyword character. -int vim_iswordc(int c) +/// @param c character to check +bool vim_iswordc(int c) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT { return vim_iswordc_buf(c, curbuf); } -int vim_iswordc_buf(int c, buf_T *buf) +/// Check that "c" is a keyword character: +/// Letters and characters from 'iskeyword' option for given buffer. +/// For multi-byte characters mb_get_class() is used (builtin rules). +/// +/// @param c character to check +/// @param buf buffer whose keywords to use +bool vim_iswordc_buf(int c, buf_T *buf) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ARG(2) { if (c >= 0x100) { if (enc_dbcs != 0) { @@ -840,10 +843,11 @@ int vim_iswordc_buf(int c, buf_T *buf) /// Just like vim_iswordc() but uses a pointer to the (multi-byte) character. /// -/// @param p +/// @param p pointer to the multi-byte character /// -/// @return TRUE if 'p' points to a keyword character. -int vim_iswordp(char_u *p) +/// @return true if "p" points to a keyword character. +bool vim_iswordp(char_u *p) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ALL { if (has_mbyte && (MB_BYTE2LEN(*p) > 1)) { return mb_get_class(p) >= 2; @@ -851,7 +855,15 @@ int vim_iswordp(char_u *p) return GET_CHARTAB(curbuf, *p) != 0; } -int vim_iswordp_buf(char_u *p, buf_T *buf) +/// Just like vim_iswordc_buf() but uses a pointer to the (multi-byte) +/// character. +/// +/// @param p pointer to the multi-byte character +/// @param buf buffer whose keywords to use +/// +/// @return true if "p" points to a keyword character. +bool vim_iswordp_buf(char_u *p, buf_T *buf) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ALL { if (has_mbyte && (MB_BYTE2LEN(*p) > 1)) { return mb_get_class(p) >= 2; @@ -859,26 +871,24 @@ int vim_iswordp_buf(char_u *p, buf_T *buf) return GET_CHARTAB(buf, *p) != 0; } -/// return TRUE if 'c' is a valid file-name character +/// Check that "c" is a valid file-name character. /// Assume characters above 0x100 are valid (multi-byte). /// -/// @param c -/// -/// @return TRUE if 'c' is a valid file name character. -int vim_isfilec(int c) +/// @param c character to check +bool vim_isfilec(int c) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT { return c >= 0x100 || (c > 0 && (chartab[c] & CT_FNAME_CHAR)); } -/// return TRUE if 'c' is a valid file-name character or a wildcard character +/// Check that "c" is a valid file-name character or a wildcard character /// Assume characters above 0x100 are valid (multi-byte). /// Explicitly interpret ']' as a wildcard character as path_has_wildcard("]") /// returns false. /// -/// @param c -/// -/// @return TRUE if 'c' is a valid file-name character or wildcard character. -int vim_isfilec_or_wc(int c) +/// @param c character to check +bool vim_isfilec_or_wc(int c) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT { char_u buf[2]; buf[0] = (char_u)c; @@ -886,14 +896,12 @@ int vim_isfilec_or_wc(int c) return vim_isfilec(c) || c == ']' || path_has_wildcard(buf); } -/// return TRUE if 'c' is a printable character -/// Assume characters above 0x100 are printable (multi-byte), except for -/// Unicode. +/// Check that "c" is a printable character. +/// Assume characters above 0x100 are printable for double-byte encodings. /// -/// @param c -/// -/// @return TRUE if 'c' a printable character. -int vim_isprintc(int c) +/// @param c character to check +bool vim_isprintc(int c) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT { if (enc_utf8 && (c >= 0x100)) { return utf_printable(c); @@ -901,16 +909,17 @@ int vim_isprintc(int c) return c >= 0x100 || (c > 0 && (chartab[c] & CT_PRINT_CHAR)); } -/// Strict version of vim_isprintc(c), don't return TRUE if "c" is the head +/// Strict version of vim_isprintc(c), don't return true if "c" is the head /// byte of a double-byte character. /// -/// @param c +/// @param c character to check /// -/// @return TRUE if 'c' is a printable character. -int vim_isprintc_strict(int c) +/// @return true if "c" is a printable character. +bool vim_isprintc_strict(int c) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT { if ((enc_dbcs != 0) && (c < 0x100) && (MB_BYTE2LEN(c) > 1)) { - return FALSE; + return false; } if (enc_utf8 && (c >= 0x100)) { @@ -921,7 +930,7 @@ int vim_isprintc_strict(int c) /// like chartabsize(), but also check for line breaks on the screen /// -/// @param line +/// @param line /// @param s /// @param col /// @@ -1144,35 +1153,33 @@ static int win_nolbr_chartabsize(win_T *wp, char_u *s, colnr_T col, int *headp) return n; } -/// Return TRUE if virtual column "vcol" is in the rightmost column of window -/// "wp". +/// Check that virtual column "vcol" is in the rightmost column of window "wp". /// -/// @param wp -/// @param vcol -/// -/// @return TRUE if the virtual column is in the rightmost column. -int in_win_border(win_T *wp, colnr_T vcol) +/// @param wp window +/// @param vcol column number +bool in_win_border(win_T *wp, colnr_T vcol) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ARG(1) { int width1; // width of first line (after line number) int width2; // width of further lines if (wp->w_width == 0) { // there is no border - return FALSE; + return false; } width1 = wp->w_width - win_col_off(wp); if ((int)vcol < width1 - 1) { - return FALSE; + return false; } if ((int)vcol == width1 - 1) { - return TRUE; + return true; } width2 = width1 + win_col_off2(wp); if (width2 <= 0) { - return FALSE; + return false; } return (vcol - width1) % width2 == width2 - 1; } @@ -1571,10 +1578,14 @@ static char_u latin1lower[257] = "\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee" "\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"; -int vim_islower(int c) +/// Check that the character is lower-case +/// +/// @param c character to check +bool vim_islower(int c) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ALL { if (c <= '@') { - return FALSE; + return false; } if (c >= 0x80) { @@ -1588,7 +1599,7 @@ int vim_islower(int c) } // islower() can't handle these chars and may crash - return FALSE; + return false; } if (enc_latin1like) { @@ -1598,10 +1609,14 @@ int vim_islower(int c) return islower(c); } -int vim_isupper(int c) +/// Check that the character is upper-case +/// +/// @param c character to check +bool vim_isupper(int c) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ALL { if (c <= '@') { - return FALSE; + return false; } if (c >= 0x80) { @@ -1614,8 +1629,8 @@ int vim_isupper(int c) return iswupper(c); } - // islower() can't handle these chars and may crash - return FALSE; + // isupper() can't handle these chars and may crash + return false; } if (enc_latin1like) { @@ -1744,12 +1759,10 @@ long getdigits_long(char_u **pp) return (long)number; } -/// Return TRUE if "lbuf" is empty or only contains blanks. +/// Check that "lbuf" is empty or only contains blanks. /// -/// @param lbuf -/// -/// @return TRUE if `lbuf` is empty or only contains blanks. -int vim_isblankline(char_u *lbuf) +/// @param lbuf line buffer to check +bool vim_isblankline(char_u *lbuf) { char_u *p = skipwhite(lbuf); return *p == NUL || *p == '\r' || *p == '\n'; @@ -1767,58 +1780,57 @@ int vim_isblankline(char_u *lbuf) /// If "len" is not NULL, the length of the number in characters is returned. /// If "nptr" is not NULL, the signed result is returned in it. /// If "unptr" is not NULL, the unsigned result is returned in it. -/// If "dobin" is non-zero recognize binary numbers, when > 1 always assume -/// binary number. -/// If "dooct" is non-zero recognize octal numbers, when > 1 always assume -/// octal number. -/// If "dohex" is non-zero recognize hex numbers, when > 1 always assume -/// hex number. +/// If "what" contains STR2NR_BIN recognize binary numbers. +/// If "what" contains STR2NR_OCT recognize octal numbers. +/// If "what" contains STR2NR_HEX recognize hex numbers. +/// If "what" contains STR2NR_FORCE always assume bin/oct/hex. +/// If maxlen > 0, check at a maximum maxlen chars. /// /// @param start /// @param prep Returns type of number 0 = decimal, 'x' or 'X' is hex, -// '0' = octal, 'b' or 'B' is bin +/// '0' = octal, 'b' or 'B' is bin /// @param len Returns the detected length of number. -/// @param dobin recognize binary number -/// @param dooct recognize octal number -/// @param dohex recognize hex number +/// @param what Recognizes what number passed. /// @param nptr Returns the signed result. /// @param unptr Returns the unsigned result. -void vim_str2nr(char_u *start, int *prep, int *len, - int dobin, int dooct, int dohex, - long *nptr, unsigned long *unptr) +/// @param maxlen Max length of string to check. +void vim_str2nr(char_u *start, int *prep, int *len, int what, + long *nptr, unsigned long *unptr, int maxlen) { char_u *ptr = start; int pre = 0; // default is decimal - int negative = false; + bool negative = false; unsigned long un = 0; - int n; if (ptr[0] == '-') { negative = true; ptr++; } - // Recognize hex, octal, and bin. - if ((ptr[0] == '0') && (ptr[1] != '8') && (ptr[1] != '9')) { + // Recognize hex, octal and bin. + if ((ptr[0] == '0') && (ptr[1] != '8') && (ptr[1] != '9') + && (maxlen == 0 || maxlen > 1)) { pre = ptr[1]; - if (dohex + if ((what & STR2NR_HEX) && ((pre == 'X') || (pre == 'x')) - && ascii_isxdigit(ptr[2])) { + && ascii_isxdigit(ptr[2]) + && (maxlen == 0 || maxlen > 2)) { // hexadecimal ptr += 2; - } else if (dobin + } else if ((what & STR2NR_BIN) && ((pre == 'B') || (pre == 'b')) - && ascii_isbdigit(ptr[2])) { + && ascii_isbdigit(ptr[2]) + && (maxlen == 0 || maxlen > 2)) { // binary ptr += 2; } else { - // default is decimal + // decimal or octal, default is decimal pre = 0; - if (dooct) { + if (what & STR2NR_OCT) { // Don't interpret "0", "08" or "0129" as octal. - for (n = 1; ascii_isdigit(ptr[n]); ++n) { + for (int n = 1; ascii_isdigit(ptr[n]); ++n) { if (ptr[n] > '7') { // can't be octal pre = 0; @@ -1828,13 +1840,17 @@ void vim_str2nr(char_u *start, int *prep, int *len, // assume octal pre = '0'; } + if (n == maxlen) { + break; + } } } } } // Do the string-to-numeric conversion "manually" to avoid sscanf quirks. - if ((pre == 'B') || (pre == 'b') || (dobin > 1)) { + int n = 1; + if ((pre == 'B') || (pre == 'b') || what == STR2NR_BIN + STR2NR_FORCE) { // bin if (pre != 0) { n += 2; // skip over "0b" @@ -1842,14 +1858,21 @@ void vim_str2nr(char_u *start, int *prep, int *len, while ('0' <= *ptr && *ptr <= '1') { un = 2 * un + (unsigned long)(*ptr - '0'); ptr++; + if (n++ == maxlen) { + break; + } } - } else if ((pre == '0') || (dooct > 1)) { + } else if ((pre == '0') || what == STR2NR_OCT + STR2NR_FORCE) { // octal while ('0' <= *ptr && *ptr <= '7') { un = 8 * un + (unsigned long)(*ptr - '0'); ptr++; + if (n++ == maxlen) { + break; + } } - } else if (pre != 0 || dohex > 1) { + } else if ((pre == 'X') || (pre == 'x') + || what == STR2NR_HEX + STR2NR_FORCE) { // hex if (pre != 0) { n += 2; // skip over "0x" @@ -1857,12 +1880,18 @@ void vim_str2nr(char_u *start, int *prep, int *len, while (ascii_isxdigit(*ptr)) { un = 16 * un + (unsigned long)hex2nr(*ptr); ptr++; + if (n++ == maxlen) { + break; + } } } else { // decimal while (ascii_isdigit(*ptr)) { un = 10 * un + (unsigned long)(*ptr - '0'); ptr++; + if (n++ == maxlen) { + break; + } } } @@ -1906,8 +1935,8 @@ int hex2nr(int c) return c - '0'; } -/// Return true if "str" starts with a backslash that should be removed. -/// For WIN32 this is only done when the character after the +/// Check that "str" starts with a backslash that should be removed. +/// For Windows this is only done when the character after the /// backslash is not a normal file name character. /// '$' is a valid file name character, we don't remove the backslash before /// it. This means it is not possible to use an environment variable after a @@ -1918,10 +1947,9 @@ int hex2nr(int c) /// character, assume that all multi-byte characters are valid file name /// characters. /// -/// @param str -/// -/// @return true if `str` starts with a backslash that should be removed. +/// @param str file path string to check bool rem_backslash(const char_u *str) + FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ALL { #ifdef BACKSLASH_IN_FILENAME return str[0] == '\\' |