Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/docs/reference/c/fitz/strings.md @ 38:8934ac156ef5

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Allow to build with the PyPI package "clang" instead of "libclang". 1. It seems to be maintained. 2. In the FreeBSD base system there is no pre-built libclang.so. If you need this library you have to install llvm from ports additionally. 2. On FreeBSD there is no pre-built wheel "libclang" with a packaged libclang.so.
author Franz Glasner <fzglas.hg@dom66.de>
date Tue, 23 Sep 2025 10:27:15 +0200
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1 # Strings
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3 All text strings in MuPDF use the `UTF-8` encoding.
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5 ## Unicode
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7 The following functions encode and decode `UTF-8` characters, and return the
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8 number of bytes used by the `UTF-8` character (at most `FZ_UTFMAX`).
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10 int fz_chartorune(int *rune, const char *str);
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11 int fz_runetochar(char *str, int rune);
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13 ## Locale Independent
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15 Since many of the C string functions are locale dependent, we also provide our
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16 own locale independent versions of these functions. We also have a couple of
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17 semi-standard functions like `strsep` and `strlcpy` that we can't rely on the
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18 system providing. These should be pretty self explanatory:
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20 char *fz_strdup(fz_context *ctx, const char *s);
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21 float fz_strtof(const char *s, char **es);
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22 char *fz_strsep(char **stringp, const char *delim);
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23 size_t fz_strlcpy(char *dst, const char *src, size_t n);
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24 size_t fz_strlcat(char *dst, const char *src, size_t n);
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25 void *fz_memmem(const void *haystack, size_t haystacklen, const void *needle, size_t needlelen);
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26 int fz_strcasecmp(const char *a, const char *b);
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28 There are also a couple of functions to process filenames and URLs:
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30 `char *fz_cleanname(char *path);`
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31 : Rewrite path in-place to the shortest string that names the same path.
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32 Eliminates multiple and trailing slashes, and interprets "." and "..".
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34 `void fz_dirname(char *dir, const char *path, size_t dir_size);`
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35 : Extract the directory component from a path.
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37 `char *fz_urldecode(char *url);`
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38 : Decode URL escapes in-place.
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40 ## Formatting
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42 Our `printf` family handles the common `printf` formatting characters, with a
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43 few minor differences. We also support several non-standard formatting
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44 characters. The same `printf` syntax is used in the `printf` functions in the
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45 I/O module as well.
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47 size_t fz_vsnprintf(char *buffer, size_t space, const char *fmt, va_list args);
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48 size_t fz_snprintf(char *buffer, size_t space, const char *fmt, ...);
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49 char *fz_asprintf(fz_context *ctx, const char *fmt, ...);
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51 `%%`, `%c`, `%e`, `%f`, `%p`, `%x`, `%d`, `%u`, `%s`
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52 : These behave as usual, but only take padding (+,0,space), width, and precision arguments.
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54 `%g float`
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55 : Prints the `float` in the shortest possible format that won't lose precision, except `NaN` to `0`, `+Inf` to `FLT_MAX`, `-Inf` to `-FLT_MAX`.
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57 `%M fz_matrix*`
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58 : Prints all 6 coefficients in the matrix as `%g` separated by spaces.
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60 `%R fz_rect*`
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61 : Prints all `x0`, `y0`, `x1`, `y1` in the rectangle as `%g` separated by spaces.
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63 `%P fz_point*`
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64 : Prints `x`, `y` in the point as `%g` separated by spaces.
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66 `%C int`
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67 : Formats character as `UTF-8`. Useful to print unicode text.
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69 `%q char*`
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70 : Formats string using double quotes and C escapes.
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72 `%( char*`
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73 : Formats string using parenthesis quotes and Postscript escapes.
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75 `%n char*`
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76 : Formats string using prefix `/` and PDF name hex-escapes.