version 1.76, 2009/06/11 07:26:35 |
version 1.84, 2009/07/14 15:16:41 |
Line 37 static void term_pescape(struct termp *, |
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Line 37 static void term_pescape(struct termp *, |
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static void term_nescape(struct termp *, |
static void term_nescape(struct termp *, |
const char *, size_t); |
const char *, size_t); |
static void term_chara(struct termp *, char); |
static void term_chara(struct termp *, char); |
static void term_stringa(struct termp *, |
static void term_encodea(struct termp *, char); |
const char *, size_t); |
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static int term_isopendelim(const char *, int); |
static int term_isopendelim(const char *, int); |
static int term_isclosedelim(const char *, int); |
static int term_isclosedelim(const char *, int); |
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Line 106 term_alloc(enum termenc enc) |
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Line 105 term_alloc(enum termenc enc) |
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if (NULL == (p = malloc(sizeof(struct termp)))) |
if (NULL == (p = malloc(sizeof(struct termp)))) |
err(1, "malloc"); |
err(1, "malloc"); |
bzero(p, sizeof(struct termp)); |
bzero(p, sizeof(struct termp)); |
p->maxrmargin = 80; |
p->maxrmargin = 78; |
p->enc = enc; |
p->enc = enc; |
return(p); |
return(p); |
} |
} |
Line 177 term_isopendelim(const char *p, int len) |
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Line 176 term_isopendelim(const char *p, int len) |
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* Specifically, a line is whatever's in p->buf of length p->col, which |
* Specifically, a line is whatever's in p->buf of length p->col, which |
* is zeroed after this function returns. |
* is zeroed after this function returns. |
* |
* |
* The variables TERMP_NOLPAD, TERMP_LITERAL and TERMP_NOBREAK are of |
* The usage of termp:flags is as follows: |
* critical importance here. Their behaviour follows: |
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* |
* |
* - TERMP_NOLPAD: when beginning to write the line, don't left-pad the |
* - TERMP_NOLPAD: when beginning to write the line, don't left-pad the |
* offset value. This is useful when doing columnar lists where the |
* offset value. This is useful when doing columnar lists where the |
Line 188 term_isopendelim(const char *p, int len) |
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Line 186 term_isopendelim(const char *p, int len) |
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* columns. In short: don't print a newline and instead pad to the |
* columns. In short: don't print a newline and instead pad to the |
* right margin. Used in conjunction with TERMP_NOLPAD. |
* right margin. Used in conjunction with TERMP_NOLPAD. |
* |
* |
* - TERMP_NONOBREAK: don't newline when TERMP_NOBREAK is specified. |
* - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and |
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* the line is overrun, and don't pad-right if it's underrun. |
* |
* |
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* - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when |
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* overruning, instead save the position and continue at that point |
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* when the next invocation. |
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* |
* In-line line breaking: |
* In-line line breaking: |
* |
* |
* If TERMP_NOBREAK is specified and the line overruns the right |
* If TERMP_NOBREAK is specified and the line overruns the right |
Line 201 term_isopendelim(const char *p, int len) |
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Line 204 term_isopendelim(const char *p, int len) |
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* Otherwise, the line will break at the right margin. Extremely long |
* Otherwise, the line will break at the right margin. Extremely long |
* lines will cause the system to emit a warning (TODO: hyphenate, if |
* lines will cause the system to emit a warning (TODO: hyphenate, if |
* possible). |
* possible). |
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* |
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* FIXME: newline breaks occur (in groff) also occur when a single |
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* space follows a NOBREAK! |
*/ |
*/ |
void |
void |
term_flushln(struct termp *p) |
term_flushln(struct termp *p) |
{ |
{ |
int i, j; |
int i, j; |
size_t vsz, vis, maxvis, mmax, bp; |
size_t vbl, vsz, vis, maxvis, mmax, bp; |
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static int sv = -1; |
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/* |
/* |
* First, establish the maximum columns of "visible" content. |
* First, establish the maximum columns of "visible" content. |
Line 221 term_flushln(struct termp *p) |
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Line 228 term_flushln(struct termp *p) |
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bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; |
bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; |
vis = 0; |
vis = 0; |
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if (sv >= 0) { |
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vis = (size_t)sv; |
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sv = -1; |
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} |
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/* |
/* |
* If in the standard case (left-justified), then begin with our |
* If in the standard case (left-justified), then begin with our |
* indentation, otherwise (columns, etc.) just start spitting |
* indentation, otherwise (columns, etc.) just start spitting |
Line 251 term_flushln(struct termp *p) |
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Line 263 term_flushln(struct termp *p) |
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} |
} |
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/* |
/* |
* Do line-breaking. If we're greater than our |
* Choose the number of blanks to prepend: no blank at the |
* break-point and already in-line, break to the next |
* beginning of a line, one between words -- but do not |
* line and start writing. If we're at the line start, |
* actually write them yet. |
* then write out the word (TODO: hyphenate) and break |
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* in a subsequent loop invocation. |
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*/ |
*/ |
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vbl = (size_t)(0 == vis ? 0 : 1); |
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if ( ! (TERMP_NOBREAK & p->flags)) { |
/* |
if (vis && vis + vsz > bp) { |
* Find out whether we would exceed the right margin. |
putchar('\n'); |
* If so, break to the next line. (TODO: hyphenate) |
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* Otherwise, write the chosen number of blanks now. |
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*/ |
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if (vis && vis + vbl + vsz > bp) { |
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putchar('\n'); |
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if (TERMP_NOBREAK & p->flags) { |
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for (j = 0; j < (int)p->rmargin; j++) |
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putchar(' '); |
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vis = p->rmargin - p->offset; |
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} else { |
for (j = 0; j < (int)p->offset; j++) |
for (j = 0; j < (int)p->offset; j++) |
putchar(' '); |
putchar(' '); |
vis = 0; |
vis = 0; |
} |
} |
} else if (vis && vis + vsz > bp) { |
} else { |
putchar('\n'); |
for (j = 0; j < (int)vbl; j++) |
for (j = 0; j < (int)p->rmargin; j++) |
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putchar(' '); |
putchar(' '); |
vis = p->rmargin - p->offset; |
vis += vbl; |
} |
} |
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/* |
/* |
* Write out the word and a trailing space. Omit the |
* Finally, write out the word. |
* space if we're the last word in the line or beyond |
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* our breakpoint. |
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*/ |
*/ |
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for ( ; i < (int)p->col; i++) { |
for ( ; i < (int)p->col; i++) { |
if (' ' == p->buf[i]) |
if (' ' == p->buf[i]) |
break; |
break; |
putchar(p->buf[i]); |
putchar(p->buf[i]); |
} |
} |
vis += vsz; |
vis += vsz; |
if (i < (int)p->col && vis <= bp) { |
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putchar(' '); |
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vis++; |
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} |
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} |
} |
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/* |
/* |
Line 296 term_flushln(struct termp *p) |
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Line 308 term_flushln(struct termp *p) |
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*/ |
*/ |
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if ((TERMP_NOBREAK & p->flags) && vis >= maxvis) { |
if ((TERMP_NOBREAK & p->flags) && vis >= maxvis) { |
if ( ! (TERMP_NONOBREAK & p->flags)) { |
if ( ! (TERMP_DANGLE & p->flags) && |
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! (TERMP_HANG & p->flags)) { |
putchar('\n'); |
putchar('\n'); |
for (i = 0; i < (int)p->rmargin; i++) |
for (i = 0; i < (int)p->rmargin; i++) |
putchar(' '); |
putchar(' '); |
} |
} |
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if (TERMP_HANG & p->flags) |
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sv = vis - maxvis; |
p->col = 0; |
p->col = 0; |
return; |
return; |
} |
} |
Line 311 term_flushln(struct termp *p) |
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Line 326 term_flushln(struct termp *p) |
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*/ |
*/ |
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if (p->flags & TERMP_NOBREAK) { |
if (p->flags & TERMP_NOBREAK) { |
if ( ! (TERMP_NONOBREAK & p->flags)) |
if ( ! (TERMP_DANGLE & p->flags)) |
for ( ; vis < maxvis; vis++) |
for ( ; vis < maxvis; vis++) |
putchar(' '); |
putchar(' '); |
} else |
} else |
Line 409 term_nescape(struct termp *p, const char *word, size_t |
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Line 424 term_nescape(struct termp *p, const char *word, size_t |
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{ |
{ |
const char *rhs; |
const char *rhs; |
size_t sz; |
size_t sz; |
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int i; |
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if (NULL == (rhs = term_a2ascii(p->symtab, word, len, &sz))) |
rhs = term_a2ascii(p->symtab, word, len, &sz); |
return; |
if (rhs) |
term_stringa(p, rhs, sz); |
for (i = 0; i < (int)sz; i++) |
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term_encodea(p, rhs[i]); |
} |
} |
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Line 521 term_pword(struct termp *p, const char *word, int len) |
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Line 538 term_pword(struct termp *p, const char *word, int len) |
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* before the word. |
* before the word. |
*/ |
*/ |
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for (i = 0; i < len; i++) { |
for (i = 0; i < len; i++) |
if ('\\' == word[i]) { |
if ('\\' == word[i]) |
term_pescape(p, word, &i, len); |
term_pescape(p, word, &i, len); |
continue; |
else |
} |
term_encodea(p, word[i]); |
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if (TERMP_STYLE & p->flags) { |
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if (TERMP_BOLD & p->flags) { |
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term_chara(p, word[i]); |
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term_chara(p, 8); |
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} |
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if (TERMP_UNDER & p->flags) { |
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term_chara(p, '_'); |
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term_chara(p, 8); |
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} |
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} |
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term_chara(p, word[i]); |
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} |
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if (term_isopendelim(word, len)) |
if (term_isopendelim(word, len)) |
p->flags |= TERMP_NOSPACE; |
p->flags |= TERMP_NOSPACE; |
} |
} |
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/* |
/* |
* Like term_chara() but for arbitrary-length buffers. Resize the |
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* buffer by a factor of two (if the buffer is less than that) or the |
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* buffer's size. |
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*/ |
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static void |
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term_stringa(struct termp *p, const char *c, size_t sz) |
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{ |
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size_t s; |
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if (0 == sz) |
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return; |
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assert(c); |
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if (p->col + sz >= p->maxcols) { |
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if (0 == p->maxcols) |
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p->maxcols = 256; |
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s = sz > p->maxcols * 2 ? sz : p->maxcols * 2; |
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p->buf = realloc(p->buf, s); |
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if (NULL == p->buf) |
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err(1, "realloc"); |
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p->maxcols = s; |
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} |
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(void)memcpy(&p->buf[(int)p->col], c, sz); |
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p->col += sz; |
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} |
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/* |
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* Insert a single character into the line-buffer. If the buffer's |
* Insert a single character into the line-buffer. If the buffer's |
* space is exceeded, then allocate more space by doubling the buffer |
* space is exceeded, then allocate more space by doubling the buffer |
* size. |
* size. |
Line 597 term_chara(struct termp *p, char c) |
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Line 571 term_chara(struct termp *p, char c) |
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p->buf[(int)(p->col)++] = c; |
p->buf[(int)(p->col)++] = c; |
} |
} |
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static void |
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term_encodea(struct termp *p, char c) |
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{ |
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if (TERMP_STYLE & p->flags) { |
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if (TERMP_BOLD & p->flags) { |
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term_chara(p, c); |
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term_chara(p, 8); |
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} |
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if (TERMP_UNDER & p->flags) { |
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term_chara(p, '_'); |
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term_chara(p, 8); |
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} |
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} |
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term_chara(p, c); |
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} |