diff options
Diffstat (limited to 'gs/src/gp_gnrdl.c')
| -rw-r--r-- | gs/src/gp_gnrdl.c | 68 |
1 files changed, 58 insertions, 10 deletions
diff --git a/gs/src/gp_gnrdl.c b/gs/src/gp_gnrdl.c index e9bb66b59..fea4bf527 100644 --- a/gs/src/gp_gnrdl.c +++ b/gs/src/gp_gnrdl.c @@ -16,8 +16,30 @@ all copies. */ +/* + As of version 5.71, Ghostscript includes an interface to the GNU readline + library, as a build-time option. This library is licensed under the GNU + General Public License (GPL), not the GNU Library / Lesser General Public + License (LGPL). If you build Aladdin Ghostscript with the gnrdline + option, which links this library into the executable, the GPL DOES NOT + ALLOW YOU TO COPY OR DISTRIBUTE THE RESULT. For example, the GPL forbids + you to build a RPM of Aladdin Ghostscript with GNU readline support and + put it on a server. + + The GPL does not forbid you to build or use the just-described software, + only to copy or distribute it. + + You *are* allowed to distribute the result of linking the GNU readline + library into GNU Ghostscript, which is licensed with the GPL. + + If you have questions or opinions about any of the above, please feel free + to contact the Free Software Foundation, authors of the GNU licenses, at + gnu@gnu.org, and/or Aladdin Enterprises, author of Ghostscript, at + ghost@aladdin.com. + */ + -/* GNU readline implementation */ +/* GNU readline interface */ #include "ctype_.h" #include "string_.h" #include "malloc_.h" @@ -27,11 +49,13 @@ #include "ghost.h" #include "errors.h" #include "gp.h" +#include "gscdefs.h" /* for gs_product for GNU test */ #include "gsmalloc.h" #include "gsmemory.h" #include "gsstruct.h" #include "stream.h" #include "gxiodev.h" +#include "ialloc.h" #include "idict.h" #include "iname.h" #include "iutil.h" @@ -129,14 +153,22 @@ gs_readline_complete(char *text, int state) return NULL; } while ((p->c_idx = dict_next(cdict, p->c_idx, eltp)) >= 0) { - const byte *rname = eltp->value.refs->value.const_bytes; - uint rlen = eltp->value.refs->tas.rsize >> 2; - - if (rname && !strncmp((const char *)rname, text, p->c_len)) { - char *name = (char *)malloc(rlen + 1); - - memcpy(name, rname, rlen); - name[rlen] = 0; + ref rnstr; + const byte *nchars; + uint nlen; + + if (!r_has_type(eltp, t_name)) + continue; + name_string_ref(eltp, &rnstr); + nchars = rnstr.value.const_bytes; + nlen = r_size(&rnstr); + if (nlen < p->c_len) + continue; + if (!strncmp((const char *)nchars, text, p->c_len)) { + char *name = (char *)malloc(nlen + 1); + + memcpy(name, nchars, nlen); + name[nlen] = 0; return name; } } @@ -213,7 +245,7 @@ rl_show_name_value(int count, int key) char str[MAX_CVS]; const byte *pchars = (const byte *)str; uint len; - int code = obj_cvp(pvref, (byte *)str, MAX_CVS, &len, 1, 0); + int code = obj_cvp(pvref, (byte *)str, MAX_CVS, &len, 1, 0, imemory); putchar('\n'); if (code < 0) { @@ -250,6 +282,22 @@ int gp_readline_init(void **preadline_data, gs_memory_t * mem) { readline_data_t *p; + int i; + + /* + * If this package is included in a non-GNU build, warn the user + * about the consequences of the GPL. + */ + for (i = strlen(gs_product) - 3; i >= 0; --i) + if (!strncmp(gs_product + i, "GNU", 3)) + break; + if (i < 0) { + fputs("\n **** WARNING: This program appears to include both the GNU readline\n", stderr); + fputs(" **** library and non-GNU-licensed code. This being so, the GNU license\n", stderr); + fputs(" **** (COPYLEFT) forbids you to copy or distribute this program.\n", stderr); + fputs(" **** See src/gp_gnrdl.c for details.\n\n", stderr); + fflush(stderr); + } using_history(); read_history(GS_histfile); |