| version 1.19, 2003/08/04 17:06:45 |
version 1.20, 2003/11/09 20:13:57 |
|
|
| * the original version didn't support form-feeds, while many of the ad-hoc |
* the original version didn't support form-feeds, while many of the ad-hoc |
| * pr implementations out there do. Addding this and making it work reasonably |
* pr implementations out there do. Addding this and making it work reasonably |
| * in all four output modes required quite a bit of hacking and a few minor |
* in all four output modes required quite a bit of hacking and a few minor |
| * bugs were noted and fixed in the processs. Some implementations have this |
* bugs were noted and fixed in the process. Some implementations have this |
| * as the as -f, some as -F so we accept either. |
* as the as -f, some as -F so we accept either. |
| * |
* |
| * The implementation of form feeds on top of the existing I/O structure is |
* The implementation of form feeds on top of the existing I/O structure is |
| * a bit ideosyncratic. Basically they are treated as temporary end-of-file |
* a bit idiosyncratic. Basically they are treated as temporary end-of-file |
| * conditions and an additional level of "loop on form feed" is added to each |
* conditions and an additional level of "loop on form feed" is added to each |
| * of the output modes to continue after such a transient end-of-file's. This |
* of the output modes to continue after such a transient end-of-file's. This |
| * has the general benefit of making the existing header/trailer logic work |
* has the general benefit of making the existing header/trailer logic work |
| * and provides a usable framework for rational behavior in multi-column modes. |
* and provides a usable framework for rational behavior in multi-column modes. |
| * |
* |
| * The orginal "efficient" implementation of the "skip to page N" option was |
* The original "efficient" implementation of the "skip to page N" option was |
| * bogus and I substituted the basic inhibit printing until page N approach. |
* bogus and I substituted the basic inhibit printing until page N approach. |
| * This is still fairly bogus vis-a-vis numbering pages on multiple files |
* This is still fairly bogus vis-a-vis numbering pages on multiple files |
| * restarting at one, but at least lets you consistantly reprint some large |
* restarting at one, but at least lets you consistently reprint some large |
| * document starting in the middle, in any of the output modes. |
* document starting in the middle, in any of the output modes. |
| * |
* |
| * Additional support for overprinting via <back-space> or <return> would |
* Additional support for overprinting via <back-space> or <return> would |
|
|
| * do not know how many columns yet. The number of operands provide an |
* do not know how many columns yet. The number of operands provide an |
| * upper bound on the number of columns. We use the number of files |
* upper bound on the number of columns. We use the number of files |
| * we can open successfully to set the number of columns. The operation |
* we can open successfully to set the number of columns. The operation |
| * of the merge operation (-m) in relation to unsuccesful file opens |
* of the merge operation (-m) in relation to unsuccessful file opens |
| * is unspecified by posix. |
* is unspecified by posix. |
| * |
* |
| * XXX - this seems moderately bogus, you'd think that specifying |
* XXX - this seems moderately bogus, you'd think that specifying |
|
|
| return(1); |
return(1); |
| |
|
| /* |
/* |
| * calculate page boundries based on open file count |
* calculate page boundaries based on open file count |
| */ |
*/ |
| if (nmwd) { |
if (nmwd) { |
| colwd = (pgwd - clcnt - nmwd)/clcnt; |
colwd = (pgwd - clcnt - nmwd)/clcnt; |
|
|
| * buf: buffer |
* buf: buffer |
| * lim: buffer length |
* lim: buffer length |
| * cnt: line length or -1 if no line (EOF for example) |
* cnt: line length or -1 if no line (EOF for example) |
| * cps: column positon 1st char in buffer (large line support) |
* cps: column position 1st char in buffer (large line support) |
| * trnc: throw away data more than lim up to \n |
* trnc: throw away data more than lim up to \n |
| * mor: set if more data in line (not truncated) |
* mor: set if more data in line (not truncated) |
| */ |
*/ |
|
|
| * prhead() should be used carefully, we don't want to print out headers |
* prhead() should be used carefully, we don't want to print out headers |
| * for null input files or orphan headers at the end of files, and also |
* for null input files or orphan headers at the end of files, and also |
| * trailer processing is typically conditional on whether you've called |
* trailer processing is typically conditional on whether you've called |
| * prhead() at least once for a file and incremented pagecnt.. Exactly |
* prhead() at least once for a file and incremented pagecnt. Exactly |
| * how to determine whether to print a header is a little different in |
* how to determine whether to print a header is a little different in |
| * the context each output mode, but we let the caller figure that out. |
* the context each output mode, but we let the caller figure that out. |
| */ |
*/ |
|
|
| * incomp was a '\n' missing from last line output |
* incomp was a '\n' missing from last line output |
| * |
* |
| * prtail() can now be invoked unconditionally, with the notion that if |
* prtail() can now be invoked unconditionally, with the notion that if |
| * we haven't printed a hearder, these no need for a trailer |
* we haven't printed a header, there is no need for a trailer |
| */ |
*/ |
| int |
int |
| prtail(int cnt, int incomp) |
prtail(int cnt, int incomp) |
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