diff options
Diffstat (limited to 'contrib/less/optfunc.c')
| -rw-r--r-- | contrib/less/optfunc.c | 71 |
1 files changed, 69 insertions, 2 deletions
diff --git a/contrib/less/optfunc.c b/contrib/less/optfunc.c index ced83ef9d6e9..2416afd863ca 100644 --- a/contrib/less/optfunc.c +++ b/contrib/less/optfunc.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 1984-2008 Mark Nudelman + * Copyright (C) 1984-2009 Mark Nudelman * * You may distribute under the terms of either the GNU General Public * License or the Less License, as specified in the README file. @@ -33,6 +33,7 @@ extern int bufspace; extern int pr_type; extern int plusoption; extern int swindow; +extern int sc_width; extern int sc_height; extern int secure; extern int dohelp; @@ -47,6 +48,8 @@ extern IFILE curr_ifile; extern char version[]; extern int jump_sline; extern int jump_sline_fraction; +extern int shift_count; +extern int shift_count_fraction; extern int less_is_more; #if LOGFILE extern char *namelogfile; @@ -221,6 +224,70 @@ calc_jump_sline() jump_sline = sc_height * jump_sline_fraction / NUM_FRAC_DENOM; } +/* + * Handlers for -# option. + */ + public void +opt_shift(type, s) + int type; + char *s; +{ + PARG parg; + char buf[16]; + int len; + int err; + + switch (type) + { + case INIT: + case TOGGLE: + if (*s == '.') + { + s++; + shift_count_fraction = getfraction(&s, "#", &err); + if (err) + error("Invalid column fraction", NULL_PARG); + else + calc_shift_count(); + } else + { + int hs = getnum(&s, "#", &err); + if (err) + error("Invalid column number", NULL_PARG); + else + { + shift_count = hs; + shift_count_fraction = -1; + } + } + break; + case QUERY: + if (shift_count_fraction < 0) + { + parg.p_int = shift_count; + error("Horizontal shift %d columns", &parg); + } else + { + + sprintf(buf, ".%06d", shift_count_fraction); + len = strlen(buf); + while (len > 2 && buf[len-1] == '0') + len--; + buf[len] = '\0'; + parg.p_string = buf; + error("Horizontal shift %s of screen width", &parg); + } + break; + } +} + public void +calc_shift_count() +{ + if (shift_count_fraction < 0) + return; + shift_count = sc_width * shift_count_fraction / NUM_FRAC_DENOM; +} + #if USERFILE public void opt_k(type, s) @@ -442,7 +509,7 @@ opt__V(type, s) any_display = 1; putstr("less "); putstr(version); - putstr("\nCopyright (C) 1984-2008 Mark Nudelman\n\n"); + putstr("\nCopyright (C) 1984-2009 Mark Nudelman\n\n"); putstr("less comes with NO WARRANTY, to the extent permitted by law.\n"); putstr("For information about the terms of redistribution,\n"); putstr("see the file named README in the less distribution.\n"); |