/*
* fmt_scan.c -- format string interpretation
*
- * $Id$
- *
* This code is Copyright (c) 2002, by the authors of nmh. See the
* COPYRIGHT file in the root directory of the nmh distribution for
* complete copyright information.
+ *
+ * This is the engine that processes the format instructions created by
+ * fmt_compile (found in fmt_compile.c).
*/
#include <h/mh.h>
#include <h/tws.h>
#include <h/fmt_compile.h>
-#ifdef TIME_WITH_SYS_TIME
+#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
-# include <time.h>
-#else
-# ifdef TM_IN_SYS_TIME
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
#endif
-
-#define NFMTS MAXARGS
-
-extern char *formataddr (); /* hook for custom address formatting */
+#include <time.h>
+#ifdef MULTIBYTE_SUPPORT
+# include <wctype.h>
+# include <wchar.h>
+#endif
#ifdef LBL
struct msgs *fmt_current_folder; /* current folder (set by main program) */
#endif
extern int fmt_norm; /* defined in sbr/fmt_def.c = AD_NAME */
-struct mailname fmt_mnull;
+struct mailname fmt_mnull = { NULL, NULL, NULL, NULL, NULL, NULL, 0, 0, 0, 0,
+ NULL, NULL };
/*
* static prototypes
}
/*
- * macros to format data
+ * copy a number to the destination subject to a maximum width
*/
-#define PUTDF(cp, num, wid, fill)\
- if (cp + wid < ep) {\
- if ((i = (num)) < 0)\
- i = -(num);\
- if ((c = (wid)) < 0)\
- c = -c;\
- sp = cp + c;\
- do {\
- *--sp = (i % 10) + '0';\
- i /= 10;\
- } while (i > 0 && sp > cp);\
- if (i > 0)\
- *sp = '?';\
- else if ((num) < 0 && sp > cp)\
- *--sp = '-';\
- while (sp > cp)\
- *--sp = fill;\
- cp += c;\
- }
-
-char * PUTSF(char *cp, char *str, unsigned int wid, char fill) {
+static void
+cpnumber(char **dest, int num, unsigned int wid, char fill, size_t n) {
+ int i, c;
+ char *sp;
+ char *cp = *dest;
+ char *ep = cp + n;
+
+ if (cp + wid < ep) {
+ if ((i = (num)) < 0)
+ i = -(num);
+ if ((c = (wid)) < 0)
+ c = -c;
+ sp = cp + c;
+ do {
+ *--sp = (i % 10) + '0';
+ i /= 10;
+ } while (i > 0 && sp > cp);
+ if (i > 0)
+ *sp = '?';
+ else if ((num) < 0 && sp > cp)
+ *--sp = '-';
+ while (sp > cp)
+ *--sp = fill;
+ cp += c;
+ }
+ *dest = cp;
+}
- unsigned int i, j;
- unsigned int char_len;
- unsigned int term_len = 0;
+/*
+ * copy string from str to dest padding with the fill character to a size
+ * of wid characters. if wid is negative, the string is right aligned
+ * no more than n bytes are copied
+ */
+static void
+cptrimmed(char **dest, char *str, unsigned int wid, char fill, size_t n) {
+ int remaining; /* remaining output width available */
+ int c, ljust;
+ int end; /* number of input bytes remaining in str */
+#ifdef MULTIBYTE_SUPPORT
+ int char_len; /* bytes in current character */
+ int w;
wchar_t wide_char;
-
- for (i = 0 ; i < wid && i < strlen(str) && term_len < wid; ) {
- char_len = mblen(str + i, strlen(str + i));
- if (char_len <= 0) {
- continue;
- }
- mbtowc(&wide_char, str + i, strlen(str + i));
- term_len += wcwidth(wide_char);
-
- for (j = 0 ; j < char_len ; j++) {
- *(cp + i) = *(str + i);
- i++;
- }
+#endif
+ char *sp; /* current position in source string */
+ char *cp = *dest; /* current position in destination string */
+ char *ep = cp + n; /* end of destination buffer */
+ int prevCtrl = 1;
+
+ /* get alignment */
+ ljust = 0;
+ if ((remaining = (wid)) < 0) {
+ remaining = -remaining;
+ ljust++;
}
+ if ((sp = (str))) {
+ mbtowc(NULL, NULL, 0); /* reset shift state */
+ end = strlen(str);
+ while (*sp && remaining > 0 && end > 0) {
+#ifdef MULTIBYTE_SUPPORT
+ char_len = mbtowc(&wide_char, sp, end);
+ if (char_len <= 0 || (cp + char_len > ep))
+ break;
+
+ end -= char_len;
- if (term_len < wid) {
- for (j = term_len ; j <= wid ; j++) {
- *(cp + i++) = fill;
- }
- i--;
+ if (iswcntrl(wide_char) || iswspace(wide_char)) {
+ sp += char_len;
+#else
+ int c;
+ end--;
+ /* isnctrl(), etc., take an int argument. Cygwin's ctype.h
+ intentionally warns if they are passed a char. */
+ c = *sp;
+ if (iscntrl(c) || isspace(c)) {
+ sp++;
+#endif
+ if (!prevCtrl) {
+ *cp++ = ' ';
+ remaining--;
+ }
+
+ prevCtrl = 1;
+ continue;
+ }
+ prevCtrl = 0;
+
+#ifdef MULTIBYTE_SUPPORT
+ w = wcwidth(wide_char);
+ if (w >= 0 && remaining >= w) {
+ strncpy(cp, sp, char_len);
+ cp += char_len;
+ remaining -= w;
+ }
+ sp += char_len;
+#else
+ *cp++ = *sp++;
+ remaining--;
+#endif
+ }
}
- return cp + i;
+ if (ljust) {
+ if (cp + remaining > ep)
+ remaining = ep - cp;
+ ep = cp + remaining;
+ if (remaining > 0) {
+ /* copy string to the right */
+ while (--cp >= *dest)
+ *(cp + remaining) = *cp;
+ /* add padding at the beginning */
+ cp += remaining;
+ for (c=remaining; c>0; c--)
+ *cp-- = fill;
+ }
+ *dest = ep;
+ } else {
+ /* pad remaining space */
+ while (remaining-- > 0 && cp < ep)
+ *cp++ = fill;
+ *dest = cp;
+ }
}
-#define PUTS(cp, str) {\
- if ((sp = (str))) {\
- while ((c = (unsigned char) *sp) && (iscntrl(c) || isspace(c)))\
- sp++;\
- while((c = (unsigned char) *sp++) && cp < ep)\
- if (!iscntrl(c) && !isspace(c)) \
- *cp++ = c;\
- else {\
- while ((c = (unsigned char) *sp) && (iscntrl(c) || isspace(c)))\
- sp++;\
- *cp++ = ' ';\
- }\
- }\
+static void
+cpstripped (char **dest, char *end, char *str)
+{
+ int prevCtrl = 1; /* This is 1 so we strip out leading spaces */
+ int len;
+#ifdef MULTIBYTE_SUPPORT
+ int char_len;
+ wchar_t wide_char;
+#endif /* MULTIBYTE_SUPPORT */
+
+ if (!str)
+ return;
+
+ len = strlen(str);
+
+#ifdef MULTIBYTE_SUPPORT
+ mbtowc(NULL, NULL, 0); /* Reset shift state */
+#endif /* MULTIBYTE_SUPPORT */
+
+ /*
+ * Process each character at a time; if we have multibyte support
+ * then deal with that here.
+ */
+
+ while (*str != '\0' && len > 0 && *dest < end) {
+#ifdef MULTIBYTE_SUPPORT
+ char_len = mbtowc(&wide_char, str, len);
+
+ if (char_len <= 0 || *dest + char_len > end)
+ break;
+
+ len -= char_len;
+
+ if (iswcntrl(wide_char) || iswspace(wide_char)) {
+ str += char_len;
+#else /* MULTIBYTE_SUPPORT */
+ int c = *str;
+ len--;
+ if (iscntrl(c) || isspace(c)) {
+ str++;
+#endif /* MULTIBYTE_SUPPORT */
+ if (! prevCtrl) {
+ *(*dest)++ = ' ';
+ }
+
+ prevCtrl = 1;
+ continue;
}
+ prevCtrl = 0;
+
+#ifdef MULTIBYTE_SUPPORT
+ memcpy(*dest, str, char_len);
+ str += char_len;
+ *dest += char_len;
+#else /* MULTIBYE_SUPPORT */
+ *(*dest)++ = *str++
+#endif /* MULTIBYTE_SUPPORT */
+ }
+}
+
static char *lmonth[] = { "January", "February","March", "April",
"May", "June", "July", "August",
"September","October", "November","December" };
|| !(cp = strchr(mbox += idx + strlen (key), '/')))
return 0;
- snprintf (buffer, buffer_len, "%*.*s", cp - mbox, cp - mbox, mbox);
+ snprintf (buffer, buffer_len, "%*.*s", (int)(cp - mbox), (int)(cp - mbox), mbox);
return 1;
}
struct format *
-fmt_scan (struct format *format, char *scanl, int width, int *dat)
+fmt_scan (struct format *format, char *scanl, size_t max, int width, int *dat)
{
- char *cp, *ep, *sp;
- char *savestr, *str = NULL;
+ char *cp, *ep;
+ unsigned char *sp;
+ char *savestr = NULL;
+ unsigned char *str = NULL;
char buffer[BUFSIZ], buffer2[BUFSIZ];
int i, c, ljust, n;
int value = 0;
struct tws *tws;
struct mailname *mn;
+ /* ep keeps track of displayed characters. They're limited by width.
+ The total number of characters, cp - scanl + 1 (for trailing NULL),
+ includes invisible control characters and is limited by max. */
cp = scanl;
- ep = scanl + width - 1;
+ ep = scanl + (width <= (int) max ? width : (int) max) - 1;
for (fmt = format; fmt->f_type != FT_DONE; fmt++)
switch (fmt->f_type) {
case FT_PARSEDATE:
fmt->f_comp->c_flags &= ~CF_PARSED;
break;
+ case FT_COMP:
+ case FT_COMPF:
+ case FT_LS_COMP:
+ case FT_LS_DECODECOMP:
+ /*
+ * Trim these components of any newlines.
+ *
+ * But don't trim the "body" and "text" components.
+ */
+
+ comp = fmt->f_comp;
+
+ if (! (comp->c_flags & CF_TRIMMED) && comp->c_text) {
+ i = strlen(comp->c_text);
+ if (comp->c_text[i - 1] == '\n' &&
+ strcmp(comp->c_name, "body") != 0 &&
+ strcmp(comp->c_name, "text") != 0)
+ comp->c_text[i - 1] = '\0';
+ comp->c_flags |= CF_TRIMMED;
+ }
+ break;
}
fmt = format;
switch (fmt->f_type) {
case FT_COMP:
- PUTS (cp, fmt->f_comp->c_text);
+ cpstripped (&cp, ep, fmt->f_comp->c_text);
break;
case FT_COMPF:
- cp = PUTSF(cp, fmt->f_comp->c_text, fmt->f_width, fmt->f_fill);
+ cptrimmed (&cp, fmt->f_comp->c_text, fmt->f_width, fmt->f_fill, ep - cp);
break;
case FT_LIT:
break;
case FT_STR:
- PUTS (cp, str);
+ cpstripped (&cp, ep, str);
break;
case FT_STRF:
- cp =PUTSF (cp, str, fmt->f_width, fmt->f_fill);
+ cptrimmed (&cp, str, fmt->f_width, fmt->f_fill, ep - cp);
+ break;
+ case FT_STRLIT:
+ sp = str;
+ while ((c = *sp++) && cp < ep)
+ *cp++ = c;
+ break;
+ case FT_STRLITZ: {
+ size_t len = strlen (str);
+
+ /* Don't want to emit part of an escape sequence. So if
+ there isn't enough room in the buffer for the entire
+ string, skip it completely. */
+ if (cp - scanl + len + 1 < max) {
+ for (sp = str; *sp; *cp++ = *sp++) continue;
+
+ /* This string doesn't count against the width. So
+ increase ep the same amount as cp, only if the
+ scan buffer will always be large enough. */
+ if (ep - scanl + len + 1 < max) {
+ ep += len;
+ }
+ }
+
break;
+ }
case FT_STRFW:
adios (NULL, "internal error (FT_STRFW)");
case FT_NUM:
- n = snprintf(cp, ep - cp, "%d", value);
- if (n >= 0) cp += n;
+ n = snprintf(cp, ep - cp + 1, "%d", value);
+ if (n >= 0) {
+ if (n >= ep - cp) {
+ cp = ep;
+ } else
+ cp += n;
+ }
break;
case FT_NUMF:
- PUTDF (cp, value, fmt->f_width, fmt->f_fill);
+ cpnumber (&cp, value, fmt->f_width, fmt->f_fill, ep - cp);
break;
case FT_CHAR:
case FT_LS_TRIM:
if (str) {
- char *xp;
+ unsigned char *xp;
strncpy(buffer, str, sizeof(buffer));
buffer[sizeof(buffer)-1] = '\0';
ljust++;
}
- if (!ljust && i > 0 && strlen(str) > i)
+ if (!ljust && i > 0 && (int) strlen(str) > i)
str[i] = '\0';
xp = str;
xp += strlen(str) - 1;
while (xp > str && isspace(*xp))
*xp-- = '\0';
- if (ljust && i > 0 && strlen(str) > i)
+ if (ljust && i > 0 && (int) strlen(str) > i)
str += strlen(str) - i;
}
break;
}
}
}
- break;
+ break;
/* UNQUOTEs RFC-2822 quoted-string and quoted-pair */
switch ( str[n] ) {
case '\\':
n++;
- if ( str[n] != '\0')
+ if ( str[n] != '\0')
buffer2[m++] = str[n++];
break;
case '"':
default:
buffer2[m++] = str[n++];
break;
- }
+ }
}
buffer2[m] = '\0';
str = buffer2;
str = formataddr (savestr, str);
break;
+ case FT_CONCATADDR:
+ /* The same as formataddr, but doesn't do duplicate suppression */
+ str = concataddr (savestr, str);
+ break;
+
case FT_PUTADDR:
/* output the str register as an address component,
* splitting it into multiple lines if necessary. The
* (e.g., "To: ")
*/
{
- char *lp, *lastb;
+ unsigned char *lp;
+ char *lastb;
int indent, wid, len;
lp = str;
sp = fmt->f_text;
indent = strlen (sp);
wid -= indent;
+ if (wid <= 0) {
+ adios(NULL, "putaddr -- num register (%d) must be greater "
+ "than label width (%d)", value, indent);
+ }
while( (c = *sp++) && cp < ep)
*cp++ = c;
while (len > wid) {
*cp++ = ' ';
}
}
- PUTS (cp, lp);
+ cpstripped (&cp, ep, lp);
}
break;
comp->c_mn = &fmt_mnull;
}
break;
-
+
case FT_MYMBOX:
/*
* if there's no component, we say true. Otherwise we
}
fmt++;
}
-#ifndef JLR
- finished:;
- if (cp[-1] != '\n')
- *cp++ = '\n';
- *cp = 0;
- return ((struct format *)0);
-#else /* JLR */
- if (cp[-1] != '\n')
- *cp++ = '\n';
- while (fmt->f_type != FT_DONE)
+
+ /* Emit any trailing sequences of zero display length. */
+ while (fmt->f_type != FT_DONE) {
+ if (fmt->f_type == FT_LS_LIT) {
+ str = fmt->f_text;
+ } else if (fmt->f_type == FT_STRLITZ) {
+ /* Don't want to emit part of an escape sequence. So if
+ there isn't enough room in the buffer for the entire
+ string, skip it completely. Need room for null
+ terminator, and maybe trailing newline (added below). */
+ if (cp - scanl + strlen (str) + 1 < max) {
+ for (sp = str; *sp; *cp++ = *sp++) continue;
+ }
+ }
fmt++;
+ }
- finished:;
+ finished:;
+ if (cp > scanl && cp[-1] != '\n') {
+ if (cp - scanl < (int) max - 1) {
+ *cp++ = '\n';
+ } else {
+ cp[-1] = '\n';
+ }
+ }
*cp = '\0';
- return (fmt->f_value ? ++fmt : (struct format *) 0);
-
-#endif /* JLR */
+ return ((struct format *)0);
}
projects / mmh / blobdiff