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vis — ?????饯????????Ū?˥????ɲ?

?饤?֥???

Standard C Library (libc, -lc)

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<vis.h> char * vis(char *dst, int c, int flag, int nextc) int strvis(char *dst, const char *src, int flag) int strvisx(char *dst, const char *src, size_t len, int flag)

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vis() ?ؿ??ϡ??????饯?? c ??ɽ??ʸ?????? dst ?˥??ԡ????ޤ??? c ???????ɲ???ɬ?פȤ??ʤ??????ϡ??????ѹ??????˥??ԡ????ޤ??? ʸ?????? null ?ǽ?ü???졢ʸ?????κǸ??ؤΥݥ??󥿤??֤????ޤ??? ?????ɲ???Ĺ???κ????ͤ? 4 ?????饯???Ǥ? (?Ǹ??? NUL ?ϴޤޤʤ?)?????äơ??????饯???Υ??åȤ? ?Хåե??˥????ɲ??????Ȥ??ϡ??Хåե??Υ??????ϥ????ɲ??????? ?????饯?????? 4 ?ܤȡ??Ǹ????դ??? NUL ??ʬ?? 1 ??ɬ?פǤ????????ɲ????? ?????饯???Υǥե??????ϰϤ??ѹ????뤿?ᡢ?ޤ?????Ū??ɽ???? ?ѹ????뤿???ˤϥե饰?ѥ??᡼?????Ȥ??ޤ????ɲäΥ????饯???? nextc ?ϡ??????ɲ????? VIS_CSTYLE ?????򤷤??Ȥ??ˤΤ߻Ȥ??ޤ? (?ʲ??????????ޤ?)??

strvis() ?????? strvisx() ?ؿ??ϡ?ʸ???? src ?λ???Ūɽ???? dst ?˥??ԡ????ޤ??? strvis() ?ؿ??ϡ? src ?????ǽ??? NUL ?ޤǤΥ????饯???򥳡??ɲ????ޤ??? strvisx() ?ؿ??ϡ? src ???????Τ? len ?ĤΥ????饯???򥳡??ɲ????ޤ? (?????ϡ?ʣ???? NUL ???ޤ???ǽ???Τ????ǡ????Υ֥??å??? ?????ɲ???????????????Ω???ޤ?)???ɤ????η????Ǥ? dst ?? NUL ?ǽ?ü???ޤ??? dst ?Υ??????ϡ? src ???饳???ɲ??????륭???饯?????? 4 ?ܤǤʤ????Фʤ??ޤ??? (?ץ饹 NUL ?Τ????? 1)???ɤ????η????Ǥ⡢?????饯?????? dst ???֤??ޤ? (?Ǹ??? NUL ?ϴޤޤ???)??

?????ɲ??ϡ????٤ƥ????ե??å??????饯???ǹ??????줿???ˡ????? ???Ѵ???ǽ??ɽ???Ǥ??????ʤ????? unvis(3) ?ޤ??? strunvis(3) ?ؿ????Ȥ??и??η????᤹???Ȥ??Ǥ??ޤ???

?????Ǥ????ѥ??᡼???? 2 ?Ĥ????ޤ?:?????ɲ????륭???饯?????ϰϡ? ?????ӻ??Ѥ???ɽ???Υ????פǤ????ǥե????ȤǤϡ????ڡ????????֡????Ԥ? ???????٤Ƥ??󥰥??ե??å??????饯?????????ɲ??????ޤ???( isgraph(3) ????) ?????ϡ??ʲ??Υե饰?ˤ??ä??ѹ??????ޤ?:

VIS_SP

???ڡ????⥳???ɲ????ޤ???

VIS_TAB

???֤⥳???ɲ????ޤ???

VIS_NL

???Ԥ⥳???ɲ????ޤ???

VIS_WHITE

VIS_SP | VIS_TAB | VIS_NL ??Ʊ????

VIS_SAFE

"unsafe" ?????饯???Τߤ򥳡??ɲ????ޤ???"unsafe"?????饯???Ȥϡ? ???̤?ü????ͽ?????ʤ???ǽ?????????????褦?????業???饯?? ?Τ??ȤǤ??????ߤΤȤ????????η????ǤϤ??٤ƤΥ????ե??å??????饯???? ?ä??ơ????ڡ????????֡????ԡ??Хå????ڡ??????٥롢?꥿?????? ?????ɲ????ʤ??Ǥ????ޤ???

?????ɲ??ˤ? 4 ?Ĥη??????????ޤ??????٤Ƥη????ϡ? ?Хå??????å??奭???饯?? ‘\’ ???Ȥä??ü쥷?????󥹤?Ƴ?????ޤ????????ΥХå??????å?????ɽ???ˤϡ?
2 ?ĤΥХå??????å??????Ȥ??ޤ??????Τ褦?ʻ???Ū???????????ޤ?:

(default)

‘M’ ???Ȥäƥ᥿?????饯?? (8 ???ܤΥӥåȤ????åȤ??줿 ?????饯??) ??ɽ?????????å? ‘^’ ???Ȥä????業???饯????ɽ???ޤ? ( iscntrl(3) ????)?? ???Τ褦?ʷ??????Ȥ??ޤ???

\^C

???業???饯?? ‘C’ ??ɽ???ޤ??? ‘\000’ ???? ‘\037’ ?ޤǡ??????? ‘\177’ ?Υ????饯???? ?ޤߤޤ? ( ?Τ褦??)??

\M-C

8 ???ܤΥӥåȤ????åȤ??줿?????饯?? ‘C’ ??ɽ???ޤ??? ‘\241’ ???? ‘\377’ ?ޤǤΥ????饯?????ޤߤޤ???

\M^C

8 ???ܤΥӥåȤ????åȤ??줿???業???饯?? ‘C’ ??ɽ???ޤ??? ‘\200’ ???? ‘\237’ ?ޤǡ??????? ?Υ????饯?????ޤߤޤ? ( ‘\M^?’ ?Τ褦??)??

\040

ASCII ?Υ??ڡ?????ɽ???ޤ???

\240

?᥿???ڡ?????ɽ???ޤ???

VIS_CSTYLE

C ?????????ΥХå??????å??奷?????󥹤??Ȥäơ?ɸ???????? ?????饯????ɽ???ޤ??????˼??????????󥹤??Ȥäơ????ꤵ???Ƥ??륭???饯?? ??ɽ???ޤ???

\a - BEL (007)
\b - BS (010)
\f - NP (014)
\n - NL (012)
\r - CR (015)
\t - HT (011)
\v - VT (013)
\0 - NUL (000)

???η??????Ȥ??????ϡ?nextc ?ѥ??᡼???򸫤? NUL ?????饯???? ‘\000’ ?ǤϤʤ? ‘\0’ ?ȥ????ɲ????뤫?ɤ?????Ƚ?Ǥ??ޤ??? nextc ?? 8 ?ʿ????Ǥ????????ϡ??????ޤ??????򤱤뤿???? ‘\000’ ??ɽ?????Ȥ??ޤ???

VIS_HTTPSTYLE

RFC 1808 ?˵??Ҥ??줿 URI ???󥳡??ɤ????Ѥ??ޤ??? ?????? ‘%dd’ ?Ǥ??ꡢ d ?ϡ?16 ?ʿ??η???ɽ?????ޤ???

VIS_OCTAL

3 ???? 8 ??ˡ???????󥹤??Ȥ??ޤ??? d ?? 8 ?ʿ?????ɽ???????ϡ??????? ‘\ddd’ ?Ȥʤ??ޤ???

?⤦???ĤΥե饰?? VIS_NOSLASH ?ϡ??Хå??????å????ν?ʣ?????ӥǥե????ȷ??? (???ʤ????? ???業???饯???? ‘^C’ ?ǡ??᥿?????饯???? ‘M-C’ ??ɽ??????) ?????ΥХå??????å????????????ޤ??????Υե饰?????å? ???Ƥ????ȡ??????ɲ??Ϥ????ޤ??Ȥʤ????Ѵ???ǽ?Ȥʤ??ޤ???

??Ϣ????

unvis(1), unvis(3) R. Fielding, Relative Uniform Resource Locators, RFC1808.

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???????δؿ??? 4.4BSD ?ǤϤ??????о줷?ޤ?????