texk 1

git-svn-id: svn://tug.org/texlive/trunk@1485 c570f23f-e606-0410-a88d-b1316a301751

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diff --git a/Build/source/texk/ps2pkm/psearch.h b/Build/source/texk/ps2pkm/psearch.h
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+/*
+ * FILE:    psearch.h
+ * PURPOSE: PATH search module
+ * VERSION: 1.0 (Oct. 1995)
+ * AUTHOR:  Piet Tutelaers (rcpt@urc.tue.nl)
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+/*
+ * This function initiates a path by using a built-in <deFault> and
+ * a PATH environment variable that can be set at run time by the user.
+ * A typical usage is
+ *    userenv = path(".:/someplace", getenv("USERENV"))
+ *
+ * If USERENV is not set getenv("USERENV") returns NULL and the returned
+ * path equals the value of the first argument. Otherwise the returned
+ * path is the value of second argument in which empty path elements are
+ * replaced by <deFault>. For example when USERENV is set to "~/myplace:"
+ * the resulting path will be "~myplace:.:/someplace".
+ */
+char *path(char *deFault, char *env);
+
+/*
+ * This function substitutes the <patterns> encountered in <str>
+ * with their corresponding <value>. Recognized patterns are %b, %d,
+ * %f, %F and %m. They will be replaced with their corresponding integer
+ * (%b, %d) or string values (%f, %F and %m). These values can be used as
+ * placeholders for basic resolution (%b), resolution (%d), font name
+ * (%f or %F) or mode definition (%m). The %F is a special case for
+ * representing the fontname leftadjusted in a string of eight characters.
+ */
+void substitute(char *str, char *patterns, ...);
+
+#define NONFATAL 0
+#undef FATAL
+#define FATAL    1
+/*
+ * Look for a <file> in <path>. Return absolute filename if found.
+ * If not found return NULL (if <terminate> is NONFATAL) or terminate
+ * program with appropriate message (if <terminate> is FATAL).
+ * On UNIX ~ or ~someone in paths are evaluated to the proper HOME
+ * directories.
+ * When the path does contain recursion characters ("//" on UNIX and
+ * "!!" on MSDOS) directories are searched recursively.
+ */
+char *search_file(char *path, char *file, int terminate);
+
+/* set global paramaters for PK font search */
+void init_pksearch(int bdpi, char *mode, int margin, char *tolerance);
+
+/*
+ * Look for a PK <font> of resolution <dpi> in <path>. To avoid floating
+ * around lots of different font sizes TeX prefers to work with whole
+ * and half magsteps. So instead of using a 330 dpi font for a 11 point
+ * version of a 300 dpi font we would prefer the 329 dpi size because
+ * this size matches magstep 0.5 of 300 (329 = int(300 * 1.2 ** 0.5).
+ * The process of truncating real font sizes to magsteps can be
+ * controlled by the global parameter <tolerance> which may be an
+ * expression of the actual value of <dpi> itself. The value dvips(1)
+ * uses for <tolerance> is 1 + <dpi> / 500 allowing more tolerance in
+ * bigger sizes. Due to round-off different DVI drivers choose different
+ * <dpi> sizes. With <margin> we can define what font sizes are looked
+ * at whenever size <dpi> is wanted. With <margin> set to zero only the
+ * exact size is looked at, while a value of one would allow for a
+ * round-off of one. Both <margin> and <tolerance> can be set before a
+ * search starts otherwise they get their default values (zero) with
+ * init_pksearch().
+ *
+ * When <path> does contain placeholders like %b, %d, %f, %p and %m
+ * they will be substituted by their corresponding values _bdpi, <dpi>,
+ * <font>, "pk" and _mode respectivally. This allows to define paths 
+ * for a whole range of printers. Occurrences off ~ or * ~user in <path>
+ * will be substituted by the corresponding HOME directories on UNIX.
+ * 
+ * The result of search_pkfile() is a pointer to the name of <font> when
+ * one is found otherwise NULL.
+ */
+char *search_pkfile(char *path, char *font, int dpi);
+
+/*
+ * evaluate <expr> after substituting %d with <dpi>. Return the
+ * integer result or abort with message when invalid expression.
+ */
+int evaluate(char *expr, int dpi);
+
+/*
+ * Round <dpi> to a whole or half magstep of <bdpi> if the distance of
+ * <dpi> is within a certain <tolerance> from it. The value of <bdpi> and
+ * <tolerance> should be set with init_pksearch().
+ */
+int nearesthalf(int dpi);
+
+extern int tilde;
+
+/*
+ * During scanning of paths we often need to replace ~user with user's
+ * HOME directory and ~ with HOME directory. Subtilde() copies the actual
+ * value of `~' or `~user' from <path> into <fn>. The pointers <fn> and
+ * <path> are `updated'.
+ */
+void subtilde(char **fn, char **path);
+
+/* Is <name> an absolute filename? */
+int absname(char *name);
+
+/*
+ * Look for font libraries in <path> (ex.: c:\emtex\texfonts;fli_0;fli_1).
+ * Run <font()> function for each .fli file found in <path>. Continue
+ * if this function returns 0, stop when if this function return a 1.
+ * In the last case the name of the FLI file is returned.
+ */
+char *search_flipath(char *flipath, int (*font)(char *, int));
+