striter: Iterator over substrings of a str.

## Data Structures

struct | striter

## Macros

#define | str_copyiter(STR, ITER) str_copyb(STR,(ITER)->startptr,(ITER)->len)
#define | str_catiter(STR, ITER) str_catb(STR,(ITER)->startptr,(ITER)->len)
#define | obuf_putiter(OBUF, ITER) obuf_write(OBUF,(ITER)->startptr,(ITER)->len)
#define | striter_loop(ITER, STR, SEP) for(striter_start(ITER,STR,SEP);striter_valid(ITER);striter_advance(ITER))

## Functions

void | striter_start (striter *iter, const struct str *s, char sep)
int | striter_valid (striter *)
int | striter_advance (striter *)

## Detailed Description

Calling Convention
  All non-void functions return `0` (false) if the function failed or the iterator is no longer valid, and non-zero (true) otherwise.

## Macro Definition Documentation

## obuf_putiter

#define obuf_putiter | ( |  | OBUF,
|  |  | ITER
| ) |  | obuf_write(OBUF,(ITER)->startptr,(ITER)->len)

Output the current striter substring to an obuf.

Referenced by path_match().

## str_catiter

#define str_catiter | ( |  | STR,
|  |  | ITER
| ) |  | str_catb(STR,(ITER)->startptr,(ITER)->len)

Append the current striter substring to a str.

## str_copyiter

#define str_copyiter | ( |  | STR,
|  |  | ITER
| ) |  | str_copyb(STR,(ITER)->startptr,(ITER)->len)

Assign the current striter substring to a str.

## striter_loop

#define striter_loop | ( |  | ITER,
|  |  | STR,
|  |  | SEP
| ) |  | for(striter_start(ITER,STR,SEP);striter_valid(ITER);striter_advance(ITER))

Loop macro; use in place of `for`(...)

Referenced by dns_read_resolvconf(), and envstr_find().

## Function Documentation

## striter_advance()

int striter_advance | ( | striter * | iter | ) |

Advance a striter to the next substring.

References len, str::len, str::s, sep, start, startptr, str, and str_findnext().

Referenced by envstr_make_array(), and path_match().

## striter_start()

void striter_start | ( | striter * | iter,
|  | const struct str * | s,
|  | char | sep
| ) |  |

Start (initialize) a striter.

References len, str::s, start, startptr, and str.

Referenced by envstr_make_array(), and path_match().

## striter_valid()

int striter_valid | ( | striter * | iter | ) |

Determine if a striter is valid (after initialization or advancing).

References str::len, start, and str.

Referenced by envstr_make_array(), and path_match().