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author | Eduardo Chappa <echappa@gmx.com> | 2013-02-03 00:59:38 -0700 |
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committer | Eduardo Chappa <echappa@gmx.com> | 2013-02-03 00:59:38 -0700 |
commit | 094ca96844842928810f14844413109fc6cdd890 (patch) | |
tree | e60efbb980f38ba9308ccb4fb2b77b87bbc115f3 /imap/src/c-client/flstring.c | |
download | alpine-094ca96844842928810f14844413109fc6cdd890.tar.xz |
Initial Alpine Version
Diffstat (limited to 'imap/src/c-client/flstring.c')
-rw-r--r-- | imap/src/c-client/flstring.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/imap/src/c-client/flstring.c b/imap/src/c-client/flstring.c new file mode 100644 index 00000000..bbdbe3c8 --- /dev/null +++ b/imap/src/c-client/flstring.c @@ -0,0 +1,91 @@ +/* ======================================================================== + * Copyright 1988-2006 University of Washington + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * + * ======================================================================== + */ + +/* + * Program: File string routines + * + * Author: Mark Crispin + * Networks and Distributed Computing + * Computing & Communications + * University of Washington + * Administration Building, AG-44 + * Seattle, WA 98195 + * Internet: MRC@CAC.Washington.EDU + * + * Date: 15 April 1997 + * Last Edited: 6 December 2006 + */ + + +#include <stdio.h> +#include "mail.h" +#include "flstring.h" + +/* String driver for stdio file strings */ + +static void file_string_init (STRING *s,void *data,unsigned long size); +static char file_string_next (STRING *s); +static void file_string_setpos (STRING *s,unsigned long i); + +STRINGDRIVER file_string = { + file_string_init, /* initialize string structure */ + file_string_next, /* get next byte in string structure */ + file_string_setpos /* set position in string structure */ +}; + + +/* Initialize mail string structure for file + * Accepts: string structure + * pointer to string + * size of string + */ + +static void file_string_init (STRING *s,void *data,unsigned long size) +{ + s->data = data; /* note file descriptor */ + /* big enough for one byte */ + s->chunk = s->curpos = (char *) &s->data1; + s->size = size; /* data size */ + s->cursize = s->chunksize = 1;/* always call stdio */ + file_string_setpos (s,0); /* initial offset is 0 */ +} + + +/* Get next character from string + * Accepts: string structure + * Returns: character, string structure chunk refreshed + */ + +static char file_string_next (STRING *s) +{ + char ret = *s->curpos; + s->offset++; /* advance position */ + s->cursize = 1; /* reset size */ + *s->curpos = (char) getc ((FILE *) s->data); + return ret; +} + + +/* Set string pointer position + * Accepts: string structure + * new position + */ + +static void file_string_setpos (STRING *s,unsigned long i) +{ + s->offset = i; /* note new offset */ + fseek ((FILE *) s->data,i,SEEK_SET); + /* in case using returnstringstruct hack */ + s->chunk = s->curpos = (char *) &s->data1; + *s->curpos = (char) getc ((FILE *) s->data); +} |