diff options
Diffstat (limited to 'rfc822.c')
| -rw-r--r-- | rfc822.c | 108 |
1 files changed, 34 insertions, 74 deletions
@@ -129,15 +129,30 @@ const char *hdr; /* header to be parsed, NUL to continue previous hdr */ for (; *hp; hp++) { - switch (state) +#ifdef TESTMAIN + printf("state %d: %s", state, hdr); + printf("%*s^\n", hp - hdr + 10, " "); +#endif /* TESTMAIN */ + + if (state == ENDIT_ALL) /* after last address */ + return(NULL); + else if (HEADER_END(hp)) + { + state = ENDIT_ALL; + while (isspace(*--tp)) + continue; + *++tp = '\0'; + return(tp > address ? (tp = address) : (char *)NULL); + } + else if (*hp == '\\') /* handle RFC822 escaping */ + { + *tp++ = *hp++; /* take the escape */ + *tp++ = *hp; /* take following char */ + } + else switch (state) { case START_HDR: /* before header colon */ - if (HEADER_END(hp)) - { - state = ENDIT_ALL; - return(NULL); - } - else if (*hp == ':') + if (*hp == ':') { state = SKIP_JUNK; tp = address; @@ -145,17 +160,7 @@ const char *hdr; /* header to be parsed, NUL to continue previous hdr */ break; case SKIP_JUNK: /* looking for address start */ - if (HEADER_END(hp)) /* no more addresses */ - { - state = ENDIT_ALL; - return(NULL); - } - else if (*hp == '\\') /* handle RFC822 escaping */ - { - *tp++ = *hp++; /* take the escape */ - *tp++ = *hp; /* take following char */ - } - else if (*hp == '"') /* quoted string */ + if (*hp == '"') /* quoted string */ { oldstate = SKIP_JUNK; state = INSIDE_DQUOTE; @@ -179,23 +184,7 @@ const char *hdr; /* header to be parsed, NUL to continue previous hdr */ break; case BARE_ADDRESS: /* collecting address without delimiters */ - if (HEADER_END(hp)) /* end of bare address */ - { - if (tp > address) - { - while (isspace(*--tp)) - continue; - *++tp = '\0'; - state = ENDIT_ALL; - return(tp = address); - } - } - else if (*hp == '\\') /* handle RFC822 escaping */ - { - *tp++ = *hp++; /* take the escape */ - *tp++ = *hp; /* take following char */ - } - else if (*hp == ',') /* end of address */ + if (*hp == ',') /* end of address */ { if (tp > address) { @@ -204,27 +193,22 @@ const char *hdr; /* header to be parsed, NUL to continue previous hdr */ return(tp = address); } } + else if (*hp == '(') /* beginning of comment */ + { + parendepth = 1; + state = INSIDE_PARENS; + } else if (*hp == '<') /* beginning of real address */ { state = INSIDE_BRACKETS; tp = address; } - else /* just take it */ + else if (!isspace(*hp)) /* just take it, ignoring whitespace */ *tp++ = *hp; break; case INSIDE_DQUOTE: /* we're in a quoted string, copy verbatim */ - if (HEADER_END(hp)) /* premature end of string */ - { - state = ENDIT_ALL; - return(NULL); - } - else if (*hp == '\\') /* handle RFC822 escaping */ - { - *tp++ = *hp++; /* take the escape */ - *tp++ = *hp; /* take following char */ - } - else if (*hp != '"') + if (*hp != '"') *tp++ = *hp; else { @@ -234,17 +218,7 @@ const char *hdr; /* header to be parsed, NUL to continue previous hdr */ break; case INSIDE_PARENS: /* we're in a parenthesized comment, ignore */ - if (HEADER_END(hp)) /* end of line, just bomb out */ - { - state = ENDIT_ALL; - return(NULL); - } - else if (*hp == '\\') /* handle RFC822 escaping */ - { - *tp++ = *hp++; /* take the escape */ - *tp++ = *hp; /* take following char */ - } - else if (*hp == '(') + if (*hp == '(') ++parendepth; else if (*hp == ')') --parendepth; @@ -253,17 +227,7 @@ const char *hdr; /* header to be parsed, NUL to continue previous hdr */ break; case INSIDE_BRACKETS: /* possible <>-enclosed address */ - if (HEADER_END(hp)) /* end of line, just bomb out */ - { - state = ENDIT_ALL; - return(NULL); - } - else if (*hp == '\\') /* handle RFC822 escaping */ - { - *tp++ = *hp++; /* take the escape */ - *tp++ = *hp; /* take following char */ - } - else if (*hp == '>') /* end of address */ + if (*hp == '>') /* end of address */ { *tp++ = '\0'; state = SKIP_JUNK; @@ -281,10 +245,6 @@ const char *hdr; /* header to be parsed, NUL to continue previous hdr */ else /* just copy address */ *tp++ = *hp; break; - - case ENDIT_ALL: /* after last address */ - return(NULL); - break; } } @@ -316,7 +276,7 @@ main(int argc, char *argv[]) else if ((cp = nxtaddr(buf)) != (char *)NULL) do { - printf("\t%s\n", cp); + printf("\t\"%s\"\n", cp); } while ((cp = nxtaddr((char *)NULL)) != (char *)NULL); } |