diff options
Diffstat (limited to 'sys/psio/psoutput.x')
| -rw-r--r-- | sys/psio/psoutput.x | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/sys/psio/psoutput.x b/sys/psio/psoutput.x new file mode 100644 index 00000000..e94cd8c9 --- /dev/null +++ b/sys/psio/psoutput.x @@ -0,0 +1,199 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +include <ctype.h> +include <psset.h> +include "psio.h" + + +# PS_OUTPUT -- Output the given line and break, fill if requested. + +procedure ps_output (ps, str, fill_flag) + +pointer ps #I PSIO descriptor +char str[ARB] #I text string to write +int fill_flag #I fill line flag + +char ch, word[SZ_FNAME] +int fd, last_nscan, ip, op, curpos +int i, spacing, nspaces, nwords, ngaps, twidth, len +int ps_textwidth(), strmatch(), strlen() +errchk ps_wrtblock, ps_textwidth + +define break_ 99 + +begin + # Idiot check. + if (str[1] == EOS) + return + + if (PS_INITIALIZED(ps) == NO) + call ps_write_prolog (ps) + + # Initialize. + fd = PS_FD(ps) + curpos = PS_CLMARGIN(ps) + last_nscan = 0 + + # Trim trailing whitespace or newlines. + len = strlen (str) + for ( ; IS_WHITE(str[len]) || str[len] == '\n'; len=len-1) + str[len] = EOS + + if (fill_flag == NO && strmatch(str, "\\\\f?") != 0) { + # No font changes or filling, just dump it as one string. + call ps_wrtblock (ps, curpos, str) + return + } + + # Get the number of words in the line. + nspaces = 0 + for (ip=1; str[ip] != EOS; ip=ip+1) { + if (IS_WHITE(str[ip]) && !IS_WHITE(str[ip+1])) + nspaces = nspaces + 1 + } + nwords = nspaces + 1 + ngaps = max (1, nspaces) + twidth = ps_textwidth (ps, str) + + # Calculate the inter-word spacing. + if (PS_CFONT(ps) == F_TELETYPE) + spacing = FIXED_WIDTH + else + spacing = SPACE_WIDTH + + if (fill_flag == YES) + spacing = spacing + (PS_LINE_WIDTH(ps) - twidth) / ngaps + + # Set the base font for the line + if (PS_SFONT(ps) != NULL) + ch = PS_SFONT_CH(ps) + else + ch = PS_CFONT_CH(ps) + call fprintf (fd, "%c\n") + call pargc (ch) + + # Process the words on the line. + ip = 1 + do i = 1, nwords { + + if (str[ip] == EOS) + break + + # Collect chars up to the end of the word. + for (op=1; str[ip] != EOS && str[ip] != ' '; op=op+1) { + word[op] = str[ip] + ip = ip + 1 + } + word[op] = EOS + twidth = ps_textwidth (ps, word) + + # if we're filling, force the right-justification of the last + # word to cover for any roundoff in the spacing computation. + if (fill_flag == YES && i == nwords) + curpos = PS_CRMPOS(ps) - twidth + + # Write it out, handling font changes. + if (op > 1) + call ps_wrtblock (ps, curpos, word) + + # Increment the position for the next word. + curpos = curpos + twidth + + # Increment for the spaces between words. + for ( ; IS_WHITE(str[ip]) && str[ip] != EOS; ip=ip+1) + curpos = curpos + spacing + } +end + + +# PS_WRTBLOCK -- Write a block of text at the given position. We escape the +# parenthesis here since they were needed in computing the width. + +procedure ps_wrtblock (ps, curpos, str) + +pointer ps #I PSIO descriptor +int curpos #I X position of text +char str[ARB] #I string to write + +char word[SZ_WORD], line[SZ_LINE] +int i, fd, ip, pos, st, en, gstrmatch() +int ps_textwidth(), ps_getfont() +errchk ps_setfont, ps_textwidth + +begin + fd = PS_FD(ps) + + call aclrc (word, SZ_WORD) + call aclrc (line, SZ_LINE) + + if (gstrmatch (str, "\\\\f?", st, en) == 0) { + # No font changes so just output the word. + call ps_escText (str, line, SZ_LINE) + call fprintf (fd, "%d (%s) S\n") + call pargi (curpos) + call pargstr (line) + + } else { + # We have a font change. Collect all chars up to the font change + # and output as an atom. Change the font, and repeat until we + # use up the string. + + pos = curpos + i = 1 + for (ip=1; str[ip] != EOS; ip=ip+1) { + if (str[ip] == '\\' && str[ip+1] == 'f') { + if (word[1] != EOS) { + word[i] = EOS + call ps_esctext (word, line, SZ_LINE) + call fprintf (fd, "%d (%s) S\n") + call pargi (pos) + call pargstr (line) + pos = pos + ps_textwidth (ps, word) + } + iferr (call ps_setfont (ps, ps_getfont(ps, str[ip+2]))) + break; + ip = ip + 2 + i = 1 + word[1] = EOS + } else { + word[i] = str[ip] + i = i + 1 + } + } + word[i] = EOS + + if (word[1] != EOS) { + call ps_esctext (word, line, SZ_LINE) + call fprintf (fd, "%d (%s) S\n") + call pargi (pos) + call pargstr (line) + pos = pos + ps_textwidth (ps, word) + } + } +end + + +# PS_ESCTEXT -- Escape the parenthesis in a text string. + +procedure ps_esctext (in, out, maxch) + +char in[ARB] #I input text +char out[ARB] #O output text +int maxch #I max characters + +int ip, op + +begin + ip = 1 + op = 1 + while (in[ip] != EOS) { + if (in[ip] == '(' || in[ip] == ')' || in[ip] == '\\') { + out[op] = '\\' + op = op + 1 + } + out[op] = in[ip] + op = op + 1 + ip = ip + 1 + } + out[op] = EOS +end |