107 lines
2.5 KiB
C
107 lines
2.5 KiB
C
#ifndef SC_STRUTIL_H
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#define SC_STRUTIL_H
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#include "common.h"
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#include <stdbool.h>
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#include <stddef.h>
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/**
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* Like strncpy(), except:
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* - it copies at most n-1 chars
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* - the dest string is nul-terminated
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* - it does not write useless bytes if strlen(src) < n
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* - it returns the number of chars actually written (max n-1) if src has
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* been copied completely, or n if src has been truncated
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*/
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size_t
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sc_strncpy(char *dest, const char *src, size_t n);
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/**
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* Join tokens by separator `sep` into `dst`
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*
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* Return the number of chars actually written (max n-1) if no truncation
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* occurred, or n if truncated.
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*/
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size_t
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sc_str_join(char *dst, const char *const tokens[], char sep, size_t n);
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/**
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* Quote a string
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*
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* Return a new allocated string, surrounded with quotes (`"`).
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*/
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char *
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sc_str_quote(const char *src);
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/**
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* Parse `s` as an integer into `out`
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*
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* Return true if the conversion succeeded, false otherwise.
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*/
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bool
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sc_str_parse_integer(const char *s, long *out);
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/**
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* Parse `s` as integers separated by `sep` (for example `1234:2000`) into `out`
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*
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* Returns the number of integers on success, 0 on failure.
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*/
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size_t
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sc_str_parse_integers(const char *s, const char sep, size_t max_items,
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long *out);
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/**
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* Parse `s` as an integer into `out`
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*
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* Like `sc_str_parse_integer()`, but accept 'k'/'K' (x1000) and 'm'/'M'
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* (x1000000) as suffixes.
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*
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* Return true if the conversion succeeded, false otherwise.
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*/
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bool
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sc_str_parse_integer_with_suffix(const char *s, long *out);
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/**
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* Search `s` in the list separated by `sep`
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*
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* For example, sc_str_list_contains("a,bc,def", ',', "bc") returns true.
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*/
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bool
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sc_str_list_contains(const char *list, char sep, const char *s);
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/**
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* Return the index to truncate a UTF-8 string at a valid position
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*/
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size_t
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sc_str_utf8_truncation_index(const char *utf8, size_t max_len);
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#ifdef _WIN32
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/**
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* Convert a UTF-8 string to a wchar_t string
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*
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* Return the new allocated string, to be freed by the caller.
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*/
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wchar_t *
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sc_str_to_wchars(const char *utf8);
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/**
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* Convert a wchar_t string to a UTF-8 string
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*
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* Return the new allocated string, to be freed by the caller.
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*/
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char *
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sc_str_from_wchars(const wchar_t *s);
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#endif
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/**
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* Wrap input lines to fit in `columns` columns
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*
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* Break input lines at word boundaries (spaces) so that they fit in `columns`
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* columns, left-indented by `indent` spaces.
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*/
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char *
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sc_str_wrap_lines(const char *input, unsigned columns, unsigned indent);
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#endif
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