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[tfman] interpret groff unicode macros #2482

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nick black 2021-12-17 01:51:36 -05:00
parent be53b25f86
commit 814432d65d
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1 changed files with 21 additions and 2 deletions
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23
src/man/main.c
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@ -184,6 +184,22 @@ puttext(struct ncplane* p, const char* s, const char* e){
return r;
}
// try to identify a unicode macro in |macro|, and if so, update |end|. returns
// a static buffer, so this is not threadsafe/reentrant.
static const char*
unicode_macro(const char* macro, const char** end){
unsigned long u;
u = strtoul(macro + 1, (char**)end, 16);
if(**end != ']'){
return NULL;
}
++*end;
static char fill[5];
wint_t wu = u;
snprintf(fill, sizeof(fill), "%lc", wu);
return fill;
}
// paragraphs can have formatting information inline within their text. we
// proceed until we find such an inline marker, print the text we've skipped,
// set up the style, and continue.
@ -261,8 +277,11 @@ putpara(struct ncplane* p, const char* text){
}
}
if(macend == NULL){
fprintf(stderr, "unknown macro %s\n", curend);
return -1;
posttext = unicode_macro(curend, &macend);
if(posttext == NULL){
fprintf(stderr, "unknown macro %s\n", curend);
return -1;
}
}
curend = macend;
break;